Finding the Third Proportional to 144,311,634 and 315,085,216

Step by Step Solution

1. Step 1: Write the proportion equation
   144,311,634 : 315,085,216 = 315,085,216 : x
2. Step 2: Convert to fraction form
   144,311,634/315,085,216 = 315,085,216/x
3. Step 3: Cross multiply
   144,311,634x = 315,085,216 × 315,085,216
4. Step 4: Simplify right side
   144,311,634x = 99,278,693,341,766,656
5. Step 5: Solve for x
   x = 99,278,693,341,766,656/144,311,634
6. Step 6: Final answer
   x = 687,946,568.06