Finding the Third Proportional to 3,885.75 and 5,479.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,885.75 : 5,479.88 = 5,479.88 : x
2. Step 2: Convert to fraction form
   3,885.75/5,479.88 = 5,479.88/x
3. Step 3: Cross multiply
   3,885.75x = 5,479.88 × 5,479.88
4. Step 4: Simplify right side
   3,885.75x = 30,029,030.02
5. Step 5: Solve for x
   x = 30,029,030.02/3,885.75
6. Step 6: Final answer
   x = 7,727.99