Finding the Third Proportional to 59,915,448 and 129,060,036

Step by Step Solution

1. Step 1: Write the proportion equation
   59,915,448 : 129,060,036 = 129,060,036 : x
2. Step 2: Convert to fraction form
   59,915,448/129,060,036 = 129,060,036/x
3. Step 3: Cross multiply
   59,915,448x = 129,060,036 × 129,060,036
4. Step 4: Simplify right side
   59,915,448x = 16,656,492,892,321,296
5. Step 5: Solve for x
   x = 16,656,492,892,321,296/59,915,448
6. Step 6: Final answer
   x = 277,999,972.43