Finding the Third Proportional to 2,772.56 and 4,280.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.56 : 4,280.34 = 4,280.34 : x
2. Step 2: Convert to fraction form
   2,772.56/4,280.34 = 4,280.34/x
3. Step 3: Cross multiply
   2,772.56x = 4,280.34 × 4,280.34
4. Step 4: Simplify right side
   2,772.56x = 18,321,342.62
5. Step 5: Solve for x
   x = 18,321,342.62/2,772.56
6. Step 6: Final answer
   x = 6,608.09