Finding the Third Proportional to 144,063,515 and 315,449,302

Step by Step Solution

1. Step 1: Write the proportion equation
   144,063,515 : 315,449,302 = 315,449,302 : x
2. Step 2: Convert to fraction form
   144,063,515/315,449,302 = 315,449,302/x
3. Step 3: Cross multiply
   144,063,515x = 315,449,302 × 315,449,302
4. Step 4: Simplify right side
   144,063,515x = 99,508,262,132,287,200
5. Step 5: Solve for x
   x = 99,508,262,132,287,200/144,063,515
6. Step 6: Final answer
   x = 690,724,935.68