Finding the Third Proportional to 2,562.15 and 5,517.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,562.15 : 5,517.28 = 5,517.28 : x
2. Step 2: Convert to fraction form
   2,562.15/5,517.28 = 5,517.28/x
3. Step 3: Cross multiply
   2,562.15x = 5,517.28 × 5,517.28
4. Step 4: Simplify right side
   2,562.15x = 30,440,392.39
5. Step 5: Solve for x
   x = 30,440,392.39/2,562.15
6. Step 6: Final answer
   x = 11,880.79