Finding the Third Proportional to 12,469.50 and 18,661.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,469.50 : 18,661.50 = 18,661.50 : x
2. Step 2: Convert to fraction form
   12,469.50/18,661.50 = 18,661.50/x
3. Step 3: Cross multiply
   12,469.50x = 18,661.50 × 18,661.50
4. Step 4: Simplify right side
   12,469.50x = 348,251,582.25
5. Step 5: Solve for x
   x = 348,251,582.25/12,469.50
6. Step 6: Final answer
   x = 27,928.27