Finding the Third Proportional to 15,626 and 17,840

Step by Step Solution

1. Step 1: Write the proportion equation
   15,626 : 17,840 = 17,840 : x
2. Step 2: Convert to fraction form
   15,626/17,840 = 17,840/x
3. Step 3: Cross multiply
   15,626x = 17,840 × 17,840
4. Step 4: Simplify right side
   15,626x = 318,265,600
5. Step 5: Solve for x
   x = 318,265,600/15,626
6. Step 6: Final answer
   x = 20,367.69