Finding the Third Proportional to 8,241 and 12,359.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,241 : 12,359.50 = 12,359.50 : x
2. Step 2: Convert to fraction form
   8,241/12,359.50 = 12,359.50/x
3. Step 3: Cross multiply
   8,241x = 12,359.50 × 12,359.50
4. Step 4: Simplify right side
   8,241x = 152,757,240.25
5. Step 5: Solve for x
   x = 152,757,240.25/8,241
6. Step 6: Final answer
   x = 18,536.25