Finding the Third Proportional to 9,162 and 12,999

Step by Step Solution

1. Step 1: Write the proportion equation
   9,162 : 12,999 = 12,999 : x
2. Step 2: Convert to fraction form
   9,162/12,999 = 12,999/x
3. Step 3: Cross multiply
   9,162x = 12,999 × 12,999
4. Step 4: Simplify right side
   9,162x = 168,974,001
5. Step 5: Solve for x
   x = 168,974,001/9,162
6. Step 6: Final answer
   x = 18,442.92