Finding the Third Proportional to 59,915,460 and 129,060,060

Step by Step Solution

1. Step 1: Write the proportion equation
   59,915,460 : 129,060,060 = 129,060,060 : x
2. Step 2: Convert to fraction form
   59,915,460/129,060,060 = 129,060,060/x
3. Step 3: Cross multiply
   59,915,460x = 129,060,060 × 129,060,060
4. Step 4: Simplify right side
   59,915,460x = 16,656,499,087,203,600
5. Step 5: Solve for x
   x = 16,656,499,087,203,600/59,915,460
6. Step 6: Final answer
   x = 278,000,020.15