Finding the Third Proportional to 12,291.75 and 18,417.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,291.75 : 18,417.38 = 18,417.38 : x
2. Step 2: Convert to fraction form
   12,291.75/18,417.38 = 18,417.38/x
3. Step 3: Cross multiply
   12,291.75x = 18,417.38 × 18,417.38
4. Step 4: Simplify right side
   12,291.75x = 339,199,701.89
5. Step 5: Solve for x
   x = 339,199,701.89/12,291.75
6. Step 6: Final answer
   x = 27,595.72