Finding the Third Proportional to 11,443 and 20,986

Step by Step Solution

1. Step 1: Write the proportion equation
   11,443 : 20,986 = 20,986 : x
2. Step 2: Convert to fraction form
   11,443/20,986 = 20,986/x
3. Step 3: Cross multiply
   11,443x = 20,986 × 20,986
4. Step 4: Simplify right side
   11,443x = 440,412,196
5. Step 5: Solve for x
   x = 440,412,196/11,443
6. Step 6: Final answer
   x = 38,487.48