Finding the Third Proportional to 9,105.75 and 18,687.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,105.75 : 18,687.38 = 18,687.38 : x
2. Step 2: Convert to fraction form
   9,105.75/18,687.38 = 18,687.38/x
3. Step 3: Cross multiply
   9,105.75x = 18,687.38 × 18,687.38
4. Step 4: Simplify right side
   9,105.75x = 349,217,984.39
5. Step 5: Solve for x
   x = 349,217,984.39/9,105.75
6. Step 6: Final answer
   x = 38,351.37