Finding the Third Proportional to 392,322.50 and 831,725

Step by Step Solution

1. Step 1: Write the proportion equation
   392,322.50 : 831,725 = 831,725 : x
2. Step 2: Convert to fraction form
   392,322.50/831,725 = 831,725/x
3. Step 3: Cross multiply
   392,322.50x = 831,725 × 831,725
4. Step 4: Simplify right side
   392,322.50x = 691,766,475,625
5. Step 5: Solve for x
   x = 691,766,475,625/392,322.50
6. Step 6: Final answer
   x = 1,763,259.76