Finding the Third Proportional to 636,604 and 865,095

Step by Step Solution

1. Step 1: Write the proportion equation
   636,604 : 865,095 = 865,095 : x
2. Step 2: Convert to fraction form
   636,604/865,095 = 865,095/x
3. Step 3: Cross multiply
   636,604x = 865,095 × 865,095
4. Step 4: Simplify right side
   636,604x = 748,389,359,025
5. Step 5: Solve for x
   x = 748,389,359,025/636,604
6. Step 6: Final answer
   x = 1,175,596.38