Finding the Third Proportional to 59,920,620 and 128,942,164.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,920,620 : 128,942,164.50 = 128,942,164.50 : x
2. Step 2: Convert to fraction form
   59,920,620/128,942,164.50 = 128,942,164.50/x
3. Step 3: Cross multiply
   59,920,620x = 128,942,164.50 × 128,942,164.50
4. Step 4: Simplify right side
   59,920,620x = 16,626,081,785,945,060
5. Step 5: Solve for x
   x = 16,626,081,785,945,060/59,920,620
6. Step 6: Final answer
   x = 277,468,453.86