Finding the Third Proportional to 1,128.38 and 2,454.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,128.38 : 2,454.75 = 2,454.75 : x
2. Step 2: Convert to fraction form
   1,128.38/2,454.75 = 2,454.75/x
3. Step 3: Cross multiply
   1,128.38x = 2,454.75 × 2,454.75
4. Step 4: Simplify right side
   1,128.38x = 6,025,797.56
5. Step 5: Solve for x
   x = 6,025,797.56/1,128.38
6. Step 6: Final answer
   x = 5,340.24