Finding the Third Proportional to 3,665.25 and 8,148.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.25 : 8,148.38 = 8,148.38 : x
2. Step 2: Convert to fraction form
   3,665.25/8,148.38 = 8,148.38/x
3. Step 3: Cross multiply
   3,665.25x = 8,148.38 × 8,148.38
4. Step 4: Simplify right side
   3,665.25x = 66,396,015.14
5. Step 5: Solve for x
   x = 66,396,015.14/3,665.25
6. Step 6: Final answer
   x = 18,115.00