Finding the Third Proportional to 253,581.75 and 392,443.88

Step by Step Solution

1. Step 1: Write the proportion equation
   253,581.75 : 392,443.88 = 392,443.88 : x
2. Step 2: Convert to fraction form
   253,581.75/392,443.88 = 392,443.88/x
3. Step 3: Cross multiply
   253,581.75x = 392,443.88 × 392,443.88
4. Step 4: Simplify right side
   253,581.75x = 154,012,195,025.02
5. Step 5: Solve for x
   x = 154,012,195,025.02/253,581.75
6. Step 6: Final answer
   x = 607,347.32