Finding the Third Proportional to 9,499.78 and 18,505.97

Step by Step Solution

1. Step 1: Write the proportion equation
   9,499.78 : 18,505.97 = 18,505.97 : x
2. Step 2: Convert to fraction form
   9,499.78/18,505.97 = 18,505.97/x
3. Step 3: Cross multiply
   9,499.78x = 18,505.97 × 18,505.97
4. Step 4: Simplify right side
   9,499.78x = 342,470,879.38
5. Step 5: Solve for x
   x = 342,470,879.38/9,499.78
6. Step 6: Final answer
   x = 36,050.40