Finding the Third Proportional to 64,949,190 and 142,754,700

Step by Step Solution

1. Step 1: Write the proportion equation
   64,949,190 : 142,754,700 = 142,754,700 : x
2. Step 2: Convert to fraction form
   64,949,190/142,754,700 = 142,754,700/x
3. Step 3: Cross multiply
   64,949,190x = 142,754,700 × 142,754,700
4. Step 4: Simplify right side
   64,949,190x = 20,378,904,372,090,000
5. Step 5: Solve for x
   x = 20,378,904,372,090,000/64,949,190
6. Step 6: Final answer
   x = 313,766,874.88