Finding the Third Proportional to 3,836.50 and 8,479.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,836.50 : 8,479.61 = 8,479.61 : x
2. Step 2: Convert to fraction form
   3,836.50/8,479.61 = 8,479.61/x
3. Step 3: Cross multiply
   3,836.50x = 8,479.61 × 8,479.61
4. Step 4: Simplify right side
   3,836.50x = 71,903,758.59
5. Step 5: Solve for x
   x = 71,903,758.59/3,836.50
6. Step 6: Final answer
   x = 18,742.00