Finding the Third Proportional to 1,279.55 and 2,626.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,279.55 : 2,626.17 = 2,626.17 : x
2. Step 2: Convert to fraction form
   1,279.55/2,626.17 = 2,626.17/x
3. Step 3: Cross multiply
   1,279.55x = 2,626.17 × 2,626.17
4. Step 4: Simplify right side
   1,279.55x = 6,896,778.72
5. Step 5: Solve for x
   x = 6,896,778.72/1,279.55
6. Step 6: Final answer
   x = 5,390.02