Finding the Third Proportional to 11,992 and 18,155

Step by Step Solution

1. Step 1: Write the proportion equation
   11,992 : 18,155 = 18,155 : x
2. Step 2: Convert to fraction form
   11,992/18,155 = 18,155/x
3. Step 3: Cross multiply
   11,992x = 18,155 × 18,155
4. Step 4: Simplify right side
   11,992x = 329,604,025
5. Step 5: Solve for x
   x = 329,604,025/11,992
6. Step 6: Final answer
   x = 27,485.33