Follow-on rule in Test cricket and what happens if India does not score 246 runs against Australia in third Test?

India face a tough challenge at the Gabba. They need 65 more runs to avoid the follow-on against Australia. Rain interrupted play with Jadeja and Reddy at the crease. India trail by 265 runs. They must reach 246 to prevent Australia batting again. Avoiding the follow-on would be a significant step towards saving the Test match.