Finding the Third Proportional to 2,691 and 5,866.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,691 : 5,866.88 = 5,866.88 : x
2. Step 2: Convert to fraction form
   2,691/5,866.88 = 5,866.88/x
3. Step 3: Cross multiply
   2,691x = 5,866.88 × 5,866.88
4. Step 4: Simplify right side
   2,691x = 34,420,222.27
5. Step 5: Solve for x
   x = 34,420,222.27/2,691
6. Step 6: Final answer
   x = 12,790.87