Finding the Third Proportional to 144,063,513 and 315,449,298

Step by Step Solution

1. Step 1: Write the proportion equation
   144,063,513 : 315,449,298 = 315,449,298 : x
2. Step 2: Convert to fraction form
   144,063,513/315,449,298 = 315,449,298/x
3. Step 3: Cross multiply
   144,063,513x = 315,449,298 × 315,449,298
4. Step 4: Simplify right side
   144,063,513x = 99,508,259,608,692,800
5. Step 5: Solve for x
   x = 99,508,259,608,692,800/144,063,513
6. Step 6: Final answer
   x = 690,724,927.75