Finding the Third Proportional to 394,429.50 and 863,892

Step by Step Solution

1. Step 1: Write the proportion equation
   394,429.50 : 863,892 = 863,892 : x
2. Step 2: Convert to fraction form
   394,429.50/863,892 = 863,892/x
3. Step 3: Cross multiply
   394,429.50x = 863,892 × 863,892
4. Step 4: Simplify right side
   394,429.50x = 746,309,387,664
5. Step 5: Solve for x
   x = 746,309,387,664/394,429.50
6. Step 6: Final answer
   x = 1,892,123.66