Finding the Third Proportional to 5,439.75 and 8,273.25

Step by Step Solution

1. Step 1: Write the proportion equation
   5,439.75 : 8,273.25 = 8,273.25 : x
2. Step 2: Convert to fraction form
   5,439.75/8,273.25 = 8,273.25/x
3. Step 3: Cross multiply
   5,439.75x = 8,273.25 × 8,273.25
4. Step 4: Simplify right side
   5,439.75x = 68,446,665.56
5. Step 5: Solve for x
   x = 68,446,665.56/5,439.75
6. Step 6: Final answer
   x = 12,582.69