Finding the Third Proportional to 99,766,092,353.50 and 206,603,954,385

Step by Step Solution

1. Step 1: Write the proportion equation
   99,766,092,353.50 : 206,603,954,385 = 206,603,954,385 : x
2. Step 2: Convert to fraction form
   99,766,092,353.50/206,603,954,385 = 206,603,954,385/x
3. Step 3: Cross multiply
   99,766,092,353.50x = 206,603,954,385 × 206,603,954,385
4. Step 4: Simplify right side
   99,766,092,353.50x = 42,685,193,967,519,162,957,824
5. Step 5: Solve for x
   x = 42,685,193,967,519,162,957,824/99,766,092,353.50
6. Step 6: Final answer
   x = 427,852,719,902.80