Finding the Third Proportional to 636,811.50 and 940,636.50

Step by Step Solution

1. Step 1: Write the proportion equation
   636,811.50 : 940,636.50 = 940,636.50 : x
2. Step 2: Convert to fraction form
   636,811.50/940,636.50 = 940,636.50/x
3. Step 3: Cross multiply
   636,811.50x = 940,636.50 × 940,636.50
4. Step 4: Simplify right side
   636,811.50x = 884,797,025,132.25
5. Step 5: Solve for x
   x = 884,797,025,132.25/636,811.50
6. Step 6: Final answer
   x = 1,389,417.47