Finding the Third Proportional to 8,442 and 13,105

Step by Step Solution

1. Step 1: Write the proportion equation
   8,442 : 13,105 = 13,105 : x
2. Step 2: Convert to fraction form
   8,442/13,105 = 13,105/x
3. Step 3: Cross multiply
   8,442x = 13,105 × 13,105
4. Step 4: Simplify right side
   8,442x = 171,741,025
5. Step 5: Solve for x
   x = 171,741,025/8,442
6. Step 6: Final answer
   x = 20,343.64