Finding the Third Proportional to 4,529.67 and 9,978.82

Step by Step Solution

1. Step 1: Write the proportion equation
   4,529.67 : 9,978.82 = 9,978.82 : x
2. Step 2: Convert to fraction form
   4,529.67/9,978.82 = 9,978.82/x
3. Step 3: Cross multiply
   4,529.67x = 9,978.82 × 9,978.82
4. Step 4: Simplify right side
   4,529.67x = 99,576,854.83
5. Step 5: Solve for x
   x = 99,576,854.83/4,529.67
6. Step 6: Final answer
   x = 21,983.24