Finding the Third Proportional to 3,855.50 and 5,510

Step by Step Solution

1. Step 1: Write the proportion equation
   3,855.50 : 5,510 = 5,510 : x
2. Step 2: Convert to fraction form
   3,855.50/5,510 = 5,510/x
3. Step 3: Cross multiply
   3,855.50x = 5,510 × 5,510
4. Step 4: Simplify right side
   3,855.50x = 30,360,100
5. Step 5: Solve for x
   x = 30,360,100/3,855.50
6. Step 6: Final answer
   x = 7,874.49