Finding the Third Proportional to 636,838.50 and 865,344

Step by Step Solution

1. Step 1: Write the proportion equation
   636,838.50 : 865,344 = 865,344 : x
2. Step 2: Convert to fraction form
   636,838.50/865,344 = 865,344/x
3. Step 3: Cross multiply
   636,838.50x = 865,344 × 865,344
4. Step 4: Simplify right side
   636,838.50x = 748,820,238,336
5. Step 5: Solve for x
   x = 748,820,238,336/636,838.50
6. Step 6: Final answer
   x = 1,175,840.09