Finding the Third Proportional to 3,280.50 and 7,176.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,280.50 : 7,176.09 = 7,176.09 : x
2. Step 2: Convert to fraction form
   3,280.50/7,176.09 = 7,176.09/x
3. Step 3: Cross multiply
   3,280.50x = 7,176.09 × 7,176.09
4. Step 4: Simplify right side
   3,280.50x = 51,496,321.51
5. Step 5: Solve for x
   x = 51,496,321.51/3,280.50
6. Step 6: Final answer
   x = 15,697.71