Finding the Third Proportional to 5,512.69 and 8,320.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,512.69 : 8,320.31 = 8,320.31 : x
2. Step 2: Convert to fraction form
   5,512.69/8,320.31 = 8,320.31/x
3. Step 3: Cross multiply
   5,512.69x = 8,320.31 × 8,320.31
4. Step 4: Simplify right side
   5,512.69x = 69,227,600.10
5. Step 5: Solve for x
   x = 69,227,600.10/5,512.69
6. Step 6: Final answer
   x = 12,557.87