Finding the Third Proportional to 392,324 and 831,724.75

Step by Step Solution

1. Step 1: Write the proportion equation
   392,324 : 831,724.75 = 831,724.75 : x
2. Step 2: Convert to fraction form
   392,324/831,724.75 = 831,724.75/x
3. Step 3: Cross multiply
   392,324x = 831,724.75 × 831,724.75
4. Step 4: Simplify right side
   392,324x = 691,766,059,762.56
5. Step 5: Solve for x
   x = 691,766,059,762.56/392,324
6. Step 6: Final answer
   x = 1,763,251.95