Finding the Third Proportional to 12,420.75 and 18,462.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,420.75 : 18,462.38 = 18,462.38 : x
2. Step 2: Convert to fraction form
   12,420.75/18,462.38 = 18,462.38/x
3. Step 3: Cross multiply
   12,420.75x = 18,462.38 × 18,462.38
4. Step 4: Simplify right side
   12,420.75x = 340,859,290.64
5. Step 5: Solve for x
   x = 340,859,290.64/12,420.75
6. Step 6: Final answer
   x = 27,442.73