Finding the Third Proportional to 12,938 and 17,403

Step by Step Solution

1. Step 1: Write the proportion equation
   12,938 : 17,403 = 17,403 : x
2. Step 2: Convert to fraction form
   12,938/17,403 = 17,403/x
3. Step 3: Cross multiply
   12,938x = 17,403 × 17,403
4. Step 4: Simplify right side
   12,938x = 302,864,409
5. Step 5: Solve for x
   x = 302,864,409/12,938
6. Step 6: Final answer
   x = 23,408.90