Finding the Third Proportional to 3,959.25 and 8,653.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,959.25 : 8,653.88 = 8,653.88 : x
2. Step 2: Convert to fraction form
   3,959.25/8,653.88 = 8,653.88/x
3. Step 3: Cross multiply
   3,959.25x = 8,653.88 × 8,653.88
4. Step 4: Simplify right side
   3,959.25x = 74,889,552.52
5. Step 5: Solve for x
   x = 74,889,552.52/3,959.25
6. Step 6: Final answer
   x = 18,915.09