Finding the Third Proportional to 10,665 and 13,959

Step by Step Solution

1. Step 1: Write the proportion equation
   10,665 : 13,959 = 13,959 : x
2. Step 2: Convert to fraction form
   10,665/13,959 = 13,959/x
3. Step 3: Cross multiply
   10,665x = 13,959 × 13,959
4. Step 4: Simplify right side
   10,665x = 194,853,681
5. Step 5: Solve for x
   x = 194,853,681/10,665
6. Step 6: Final answer
   x = 18,270.39