Finding the Third Proportional to 457.13 and 1,002.56

Step by Step Solution

1. Step 1: Write the proportion equation
   457.13 : 1,002.56 = 1,002.56 : x
2. Step 2: Convert to fraction form
   457.13/1,002.56 = 1,002.56/x
3. Step 3: Cross multiply
   457.13x = 1,002.56 × 1,002.56
4. Step 4: Simplify right side
   457.13x = 1,005,131.57
5. Step 5: Solve for x
   x = 1,005,131.57/457.13
6. Step 6: Final answer
   x = 2,198.81