The phrase "getting large" is correct and usable in written English.
You can use it to express that something is becoming increasingly large. For example, "The stack of boxes in the corner was getting large."
"They beat us in getting large investments," Ben-Shaul recalled.
There are countries getting large amounts of energy from wind.
Getting large amounts of business from state-owned Chinese firms is more difficult.
I like getting large groups of people together and cooking for family and friends.
Their misery was compounded on hearing that the bank's directors would still be getting large bonuses.
One of the most obvious ones is getting large numbers of people to give you money.
Shirley, Shahbazi and Miller haven't had an easy time getting large-scale financing for their health-house network.
Hungary's government has turned its back on everything Europe stands for — but it's still getting large-scale aid from Brussels.
This struck us as being the quickest, the fastest, and the most efficient way of getting large-scale additions to our collections online for free use".
"We need to look urgently at the options for getting large-scale private investment into the national roads network, from sovereign wealth funds, pension funds, and other investors".
The Lincoln matter was getting large-scale press attention and the senators became commonly known as the "Keating Five".
