Finding the Third Proportional to 2,639.25 and 3,969

Step by Step Solution

1. Step 1: Write the proportion equation
   2,639.25 : 3,969 = 3,969 : x
2. Step 2: Convert to fraction form
   2,639.25/3,969 = 3,969/x
3. Step 3: Cross multiply
   2,639.25x = 3,969 × 3,969
4. Step 4: Simplify right side
   2,639.25x = 15,752,961
5. Step 5: Solve for x
   x = 15,752,961/2,639.25
6. Step 6: Final answer
   x = 5,968.73