Finding the Third Proportional to 3,851.72 and 5,504.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,851.72 : 5,504.20 = 5,504.20 : x
2. Step 2: Convert to fraction form
   3,851.72/5,504.20 = 5,504.20/x
3. Step 3: Cross multiply
   3,851.72x = 5,504.20 × 5,504.20
4. Step 4: Simplify right side
   3,851.72x = 30,296,252.04
5. Step 5: Solve for x
   x = 30,296,252.04/3,851.72
6. Step 6: Final answer
   x = 7,865.64