Finding the Third Proportional to 415,577.25 and 631,746

Step by Step Solution

1. Step 1: Write the proportion equation
   415,577.25 : 631,746 = 631,746 : x
2. Step 2: Convert to fraction form
   415,577.25/631,746 = 631,746/x
3. Step 3: Cross multiply
   415,577.25x = 631,746 × 631,746
4. Step 4: Simplify right side
   415,577.25x = 399,103,008,516
5. Step 5: Solve for x
   x = 399,103,008,516/415,577.25
6. Step 6: Final answer
   x = 960,358.17