Finding the Third Proportional to 8,608 and 13,238

Step by Step Solution

1. Step 1: Write the proportion equation
   8,608 : 13,238 = 13,238 : x
2. Step 2: Convert to fraction form
   8,608/13,238 = 13,238/x
3. Step 3: Cross multiply
   8,608x = 13,238 × 13,238
4. Step 4: Simplify right side
   8,608x = 175,244,644
5. Step 5: Solve for x
   x = 175,244,644/8,608
6. Step 6: Final answer
   x = 20,358.35