Finding the Third Proportional to 180,049.50 and 392,499

Step by Step Solution

1. Step 1: Write the proportion equation
   180,049.50 : 392,499 = 392,499 : x
2. Step 2: Convert to fraction form
   180,049.50/392,499 = 392,499/x
3. Step 3: Cross multiply
   180,049.50x = 392,499 × 392,499
4. Step 4: Simplify right side
   180,049.50x = 154,055,465,001
5. Step 5: Solve for x
   x = 154,055,465,001/180,049.50
6. Step 6: Final answer
   x = 855,628.40