Finding the Third Proportional to 1,248.70 and 2,689.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,248.70 : 2,689.61 = 2,689.61 : x
2. Step 2: Convert to fraction form
   1,248.70/2,689.61 = 2,689.61/x
3. Step 3: Cross multiply
   1,248.70x = 2,689.61 × 2,689.61
4. Step 4: Simplify right side
   1,248.70x = 7,234,009.10
5. Step 5: Solve for x
   x = 7,234,009.10/1,248.70
6. Step 6: Final answer
   x = 5,793.24