Finding the Third Proportional to 8,151.75 and 12,315.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,151.75 : 12,315.38 = 12,315.38 : x
2. Step 2: Convert to fraction form
   8,151.75/12,315.38 = 12,315.38/x
3. Step 3: Cross multiply
   8,151.75x = 12,315.38 × 12,315.38
4. Step 4: Simplify right side
   8,151.75x = 151,668,461.39
5. Step 5: Solve for x
   x = 151,668,461.39/8,151.75
6. Step 6: Final answer
   x = 18,605.63