Finding the Third Proportional to 12,342.38 and 18,486.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,342.38 : 18,486.56 = 18,486.56 : x
2. Step 2: Convert to fraction form
   12,342.38/18,486.56 = 18,486.56/x
3. Step 3: Cross multiply
   12,342.38x = 18,486.56 × 18,486.56
4. Step 4: Simplify right side
   12,342.38x = 341,752,993.07
5. Step 5: Solve for x
   x = 341,752,993.07/12,342.38
6. Step 6: Final answer
   x = 27,689.40