Finding the Third Proportional to 3,665.25 and 7,578.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.25 : 7,578.56 = 7,578.56 : x
2. Step 2: Convert to fraction form
   3,665.25/7,578.56 = 7,578.56/x
3. Step 3: Cross multiply
   3,665.25x = 7,578.56 × 7,578.56
4. Step 4: Simplify right side
   3,665.25x = 57,434,609.57
5. Step 5: Solve for x
   x = 57,434,609.57/3,665.25
6. Step 6: Final answer
   x = 15,670.04