Finding the Third Proportional to 12,442.50 and 18,861.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,442.50 : 18,861.38 = 18,861.38 : x
2. Step 2: Convert to fraction form
   12,442.50/18,861.38 = 18,861.38/x
3. Step 3: Cross multiply
   12,442.50x = 18,861.38 × 18,861.38
4. Step 4: Simplify right side
   12,442.50x = 355,751,466.89
5. Step 5: Solve for x
   x = 355,751,466.89/12,442.50
6. Step 6: Final answer
   x = 28,591.64