Finding the Third Proportional to 2,145.54 and 3,280.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.54 : 3,280.15 = 3,280.15 : x
2. Step 2: Convert to fraction form
   2,145.54/3,280.15 = 3,280.15/x
3. Step 3: Cross multiply
   2,145.54x = 3,280.15 × 3,280.15
4. Step 4: Simplify right side
   2,145.54x = 10,759,381.43
5. Step 5: Solve for x
   x = 10,759,381.43/2,145.54
6. Step 6: Final answer
   x = 5,014.75