"on the final step" is a correct and usable phrase in written English.
You can use it when describing a process or series of steps, and it indicates that the speaker/subject is currently at the last step or at the end of the process. Example: "I was able to complete the project successfully, but it wasn't easy. I stumbled a few times along the way, but on the final step, everything finally fell into place."
On the final step came the project's evil surprise.
It took until February 2014 for the new financial managers to be in place – and for the RBF board to agree on the final step – that there was no turning back and the fund would quit fossil fuels.
The R18 Ultra of Marci Bonanomi, Oliver Jarvis and Mike Rockenfeller finished on the final step of the podium while the second R18 Ultra was fifth, behind the number 12 Lola-Toyota.
If you're a non-quant, you should also focus on the final step in the process presenting and communicating results to other executives because it's one that many quants discount or overlook and that you'll probably have to take on yourself at some point.
From there, a company can focus on the final step: instituting a culture of shared innovation.
In the fungal cellulase system, BGL mainly hydrolyze cellooligosaccharides to glucose on the final step of cellulose degradation.
Although many studies focus on the outcomes of the final step of the exchange procedure, unsuccessful outcome often occurs after the initial step when an antibiotic-laden spacer is inserted [17].
Going down the steps, I had scraped the back of my heel on the sharp edge of the final step.
The procurement of a waste-to-energy (WTE) system by a community is one of the final steps on the long road of project implementation.
BP says it plans to inject mud and possibly cement into its Gulf of Mexico oil well on Tuesday, in one of the final steps to permanently seal it.
After a yearlong effort to increase efficiency for businesses and homeowners who deal with the city, the City Council on Tuesday took one of the final steps to change a variety of city codes.
