Finding the Third Proportional to 252,407,665 and 387,729,078

Step by Step Solution

1. Step 1: Write the proportion equation
   252,407,665 : 387,729,078 = 387,729,078 : x
2. Step 2: Convert to fraction form
   252,407,665/387,729,078 = 387,729,078/x
3. Step 3: Cross multiply
   252,407,665x = 387,729,078 × 387,729,078
4. Step 4: Simplify right side
   252,407,665x = 150,333,837,926,730,080
5. Step 5: Solve for x
   x = 150,333,837,926,730,080/252,407,665
6. Step 6: Final answer
   x = 595,599,337.00