Finding the Third Proportional to 5,488.50 and 8,112

Step by Step Solution

1. Step 1: Write the proportion equation
   5,488.50 : 8,112 = 8,112 : x
2. Step 2: Convert to fraction form
   5,488.50/8,112 = 8,112/x
3. Step 3: Cross multiply
   5,488.50x = 8,112 × 8,112
4. Step 4: Simplify right side
   5,488.50x = 65,804,544
5. Step 5: Solve for x
   x = 65,804,544/5,488.50
6. Step 6: Final answer
   x = 11,989.53