Finding the Third Proportional to 4,086.75 and 8,851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086.75 : 8,851.50 = 8,851.50 : x
2. Step 2: Convert to fraction form
   4,086.75/8,851.50 = 8,851.50/x
3. Step 3: Cross multiply
   4,086.75x = 8,851.50 × 8,851.50
4. Step 4: Simplify right side
   4,086.75x = 78,349,052.25
5. Step 5: Solve for x
   x = 78,349,052.25/4,086.75
6. Step 6: Final answer
   x = 19,171.48