Finding the Third Proportional to 11,940.75 and 18,412.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,940.75 : 18,412.31 = 18,412.31 : x
2. Step 2: Convert to fraction form
   11,940.75/18,412.31 = 18,412.31/x
3. Step 3: Cross multiply
   11,940.75x = 18,412.31 × 18,412.31
4. Step 4: Simplify right side
   11,940.75x = 339,013,251.60
5. Step 5: Solve for x
   x = 339,013,251.60/11,940.75
6. Step 6: Final answer
   x = 28,391.29