Finding the Third Proportional to 392,806.50 and 843,744

Step by Step Solution

1. Step 1: Write the proportion equation
   392,806.50 : 843,744 = 843,744 : x
2. Step 2: Convert to fraction form
   392,806.50/843,744 = 843,744/x
3. Step 3: Cross multiply
   392,806.50x = 843,744 × 843,744
4. Step 4: Simplify right side
   392,806.50x = 711,903,937,536
5. Step 5: Solve for x
   x = 711,903,937,536/392,806.50
6. Step 6: Final answer
   x = 1,812,352.74