Finding the Third Proportional to 12,162.75 and 18,489.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,162.75 : 18,489.50 = 18,489.50 : x
2. Step 2: Convert to fraction form
   12,162.75/18,489.50 = 18,489.50/x
3. Step 3: Cross multiply
   12,162.75x = 18,489.50 × 18,489.50
4. Step 4: Simplify right side
   12,162.75x = 341,861,610.25
5. Step 5: Solve for x
   x = 341,861,610.25/12,162.75
6. Step 6: Final answer
   x = 28,107.26