Finding the Third Proportional to 394,414.31 and 863,460

Step by Step Solution

1. Step 1: Write the proportion equation
   394,414.31 : 863,460 = 863,460 : x
2. Step 2: Convert to fraction form
   394,414.31/863,460 = 863,460/x
3. Step 3: Cross multiply
   394,414.31x = 863,460 × 863,460
4. Step 4: Simplify right side
   394,414.31x = 745,563,171,600
5. Step 5: Solve for x
   x = 745,563,171,600/394,414.31
6. Step 6: Final answer
   x = 1,890,304.56