Finding the Third Proportional to 8,191.13 and 12,276.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,191.13 : 12,276.56 = 12,276.56 : x
2. Step 2: Convert to fraction form
   8,191.13/12,276.56 = 12,276.56/x
3. Step 3: Cross multiply
   8,191.13x = 12,276.56 × 12,276.56
4. Step 4: Simplify right side
   8,191.13x = 150,713,986.82
5. Step 5: Solve for x
   x = 150,713,986.82/8,191.13
6. Step 6: Final answer
   x = 18,399.67