Finding the Third Proportional to 99,766,092,354 and 206,603,954,387

Step by Step Solution

1. Step 1: Write the proportion equation
   99,766,092,354 : 206,603,954,387 = 206,603,954,387 : x
2. Step 2: Convert to fraction form
   99,766,092,354/206,603,954,387 = 206,603,954,387/x
3. Step 3: Cross multiply
   99,766,092,354x = 206,603,954,387 × 206,603,954,387
4. Step 4: Simplify right side
   99,766,092,354x = 42,685,193,968,345,575,063,552
5. Step 5: Solve for x
   x = 42,685,193,968,345,575,063,552/99,766,092,354
6. Step 6: Final answer
   x = 427,852,719,908.94