Finding the Third Proportional to 12,443 and 17,715

Step by Step Solution

1. Step 1: Write the proportion equation
   12,443 : 17,715 = 17,715 : x
2. Step 2: Convert to fraction form
   12,443/17,715 = 17,715/x
3. Step 3: Cross multiply
   12,443x = 17,715 × 17,715
4. Step 4: Simplify right side
   12,443x = 313,821,225
5. Step 5: Solve for x
   x = 313,821,225/12,443
6. Step 6: Final answer
   x = 25,220.70