Finding the Third Proportional to 12,908 and 17,617

Step by Step Solution

1. Step 1: Write the proportion equation
   12,908 : 17,617 = 17,617 : x
2. Step 2: Convert to fraction form
   12,908/17,617 = 17,617/x
3. Step 3: Cross multiply
   12,908x = 17,617 × 17,617
4. Step 4: Simplify right side
   12,908x = 310,358,689
5. Step 5: Solve for x
   x = 310,358,689/12,908
6. Step 6: Final answer
   x = 24,043.90