Finding the Third Proportional to 8,705 and 13,442

Step by Step Solution

1. Step 1: Write the proportion equation
   8,705 : 13,442 = 13,442 : x
2. Step 2: Convert to fraction form
   8,705/13,442 = 13,442/x
3. Step 3: Cross multiply
   8,705x = 13,442 × 13,442
4. Step 4: Simplify right side
   8,705x = 180,687,364
5. Step 5: Solve for x
   x = 180,687,364/8,705
6. Step 6: Final answer
   x = 20,756.73