Finding the Third Proportional to 2,691.50 and 5,708.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,691.50 : 5,708.50 = 5,708.50 : x
2. Step 2: Convert to fraction form
   2,691.50/5,708.50 = 5,708.50/x
3. Step 3: Cross multiply
   2,691.50x = 5,708.50 × 5,708.50
4. Step 4: Simplify right side
   2,691.50x = 32,586,972.25
5. Step 5: Solve for x
   x = 32,586,972.25/2,691.50
6. Step 6: Final answer
   x = 12,107.36