The phrase "a third organisation" is correct and usable in written English.
It can be used when referring to an additional organization in a context where two other organizations have already been mentioned.
Example: "After discussing the proposals from the first two companies, we should also consider the input from a third organisation."
Alternatives: "an additional organization" or "a separate organization".
A fourth organisation is the European Foundation, which is run by Bill Cash, a hardline Eurosceptic Tory MP.
And a second organisation that acts as a watchdog on media coverage of violence against women, Ending Victimisation & Blame (EVB), also took issue with The Sun's story.
The transition from fibrils to bundles was smooth and it was associated with a significant reduction in the overall top area fraction and with the development of a second organisation level at a larger length scale.
The review, authored by the watchdog's head of regulation, Louise Edwards, also said that the emergence of a donation by Vote Leave to a second organisation, Veterans for Britain, was key to its renewed investigation.
Instead Ofcom recommended that the broadcaster become the heart of "a second organisation alongside the BBC, with a sustainable economic model and with a strong public service role embedded at its core".
Where funding was said to be provided by a first organisation through a second organisation (e.g. this study was funded by funder X through a grant to organisation Y), only the first organisation (X) was taken to be the funder of the research.
Questions about Davidson's involvement with Norris were first raised in a Guardian article in 2002, with the same allegations being made by the BBC in 2006, and a third news organisation a fortnight ago.
"However, anyone working or volunteering on behalf of a third party organisation — for example, a sports club or a charity — who has frequent or intensive access to children or vulnerable adults will have to be registered with the scheme.
The infrastructure provider, this could be a cloud provider, datacenter, an in-house team or a third party organisation.
Nor will the board enter into any agreement with a third party organisation on season ticket renewals, as is being suggested.
