Finding the Third Proportional to 2,657.25 and 3,986

Step by Step Solution

1. Step 1: Write the proportion equation
   2,657.25 : 3,986 = 3,986 : x
2. Step 2: Convert to fraction form
   2,657.25/3,986 = 3,986/x
3. Step 3: Cross multiply
   2,657.25x = 3,986 × 3,986
4. Step 4: Simplify right side
   2,657.25x = 15,888,196
5. Step 5: Solve for x
   x = 15,888,196/2,657.25
6. Step 6: Final answer
   x = 5,979.19