Finding the Third Proportional to 2,639 and 5,404

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639 : 5,404 = 5,404 : x
2. Step 2: Convert to fraction form
   2,639/5,404 = 5,404/x
3. Step 3: Cross multiply
   2,639x = 5,404 × 5,404
4. Step 4: Simplify right side
   2,639x = 29,203,216
5. Step 5: Solve for x
   x = 29,203,216/2,639
6. Step 6: Final answer
   x = 11,066.02