Finding the Third Proportional to 2,540 and 5,470

Step by Step Solution

1. Step 1: Write the proportion equation
   2,540 : 5,470 = 5,470 : x
2. Step 2: Convert to fraction form
   2,540/5,470 = 5,470/x
3. Step 3: Cross multiply
   2,540x = 5,470 × 5,470
4. Step 4: Simplify right side
   2,540x = 29,920,900
5. Step 5: Solve for x
   x = 29,920,900/2,540
6. Step 6: Final answer
   x = 11,779.88