Finding the Third Proportional to 4,992 and 7,761.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,992 : 7,761.50 = 7,761.50 : x
2. Step 2: Convert to fraction form
   4,992/7,761.50 = 7,761.50/x
3. Step 3: Cross multiply
   4,992x = 7,761.50 × 7,761.50
4. Step 4: Simplify right side
   4,992x = 60,240,882.25
5. Step 5: Solve for x
   x = 60,240,882.25/4,992
6. Step 6: Final answer
   x = 12,067.48