Finding the Third Proportional to 11,687 and 18,144

Step by Step Solution

1. Step 1: Write the proportion equation
   11,687 : 18,144 = 18,144 : x
2. Step 2: Convert to fraction form
   11,687/18,144 = 18,144/x
3. Step 3: Cross multiply
   11,687x = 18,144 × 18,144
4. Step 4: Simplify right side
   11,687x = 329,204,736
5. Step 5: Solve for x
   x = 329,204,736/11,687
6. Step 6: Final answer
   x = 28,168.46