Finding the Third Proportional to 12,874 and 17,389

Step by Step Solution

1. Step 1: Write the proportion equation
   12,874 : 17,389 = 17,389 : x
2. Step 2: Convert to fraction form
   12,874/17,389 = 17,389/x
3. Step 3: Cross multiply
   12,874x = 17,389 × 17,389
4. Step 4: Simplify right side
   12,874x = 302,377,321
5. Step 5: Solve for x
   x = 302,377,321/12,874
6. Step 6: Final answer
   x = 23,487.44