Finding the Third Proportional to 718.75 and 1,498.25

Step by Step Solution

1. Step 1: Write the proportion equation
   718.75 : 1,498.25 = 1,498.25 : x
2. Step 2: Convert to fraction form
   718.75/1,498.25 = 1,498.25/x
3. Step 3: Cross multiply
   718.75x = 1,498.25 × 1,498.25
4. Step 4: Simplify right side
   718.75x = 2,244,753.06
5. Step 5: Solve for x
   x = 2,244,753.06/718.75
6. Step 6: Final answer
   x = 3,123.13