The Tirthankar whose name means “vruddhi” (increase, growth, prosperity) is:

Bhagwan Mahavir, whose original name is Vardhaman. “Vardhaman” comes from the root “vardh” which means to grow, to increase. Jain tradition says that after his conception, the prosperity, wealth, and happiness of the kingdom started increasing, so he was named Vardhaman.

You can read more about Bhagwan Mahavir’s life and name here