Finding the Third Proportional to 252,407,680 and 387,729,105

Step by Step Solution

1. Step 1: Write the proportion equation
   252,407,680 : 387,729,105 = 387,729,105 : x
2. Step 2: Convert to fraction form
   252,407,680/387,729,105 = 387,729,105/x
3. Step 3: Cross multiply
   252,407,680x = 387,729,105 × 387,729,105
4. Step 4: Simplify right side
   252,407,680x = 150,333,858,864,101,024
5. Step 5: Solve for x
   x = 150,333,858,864,101,024/252,407,680
6. Step 6: Final answer
   x = 595,599,384.55