Finding the Third Proportional to 392,314 and 831,708.50

Step by Step Solution

1. Step 1: Write the proportion equation
   392,314 : 831,708.50 = 831,708.50 : x
2. Step 2: Convert to fraction form
   392,314/831,708.50 = 831,708.50/x
3. Step 3: Cross multiply
   392,314x = 831,708.50 × 831,708.50
4. Step 4: Simplify right side
   392,314x = 691,739,028,972.25
5. Step 5: Solve for x
   x = 691,739,028,972.25/392,314
6. Step 6: Final answer
   x = 1,763,228.00