Finding the Third Proportional to 12,210.75 and 18,766.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,210.75 : 18,766.69 = 18,766.69 : x
2. Step 2: Convert to fraction form
   12,210.75/18,766.69 = 18,766.69/x
3. Step 3: Cross multiply
   12,210.75x = 18,766.69 × 18,766.69
4. Step 4: Simplify right side
   12,210.75x = 352,188,559.72
5. Step 5: Solve for x
   x = 352,188,559.72/12,210.75
6. Step 6: Final answer
   x = 28,842.50