Finding the Third Proportional to 4,879.78 and 10,499.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,879.78 : 10,499.72 = 10,499.72 : x
2. Step 2: Convert to fraction form
   4,879.78/10,499.72 = 10,499.72/x
3. Step 3: Cross multiply
   4,879.78x = 10,499.72 × 10,499.72
4. Step 4: Simplify right side
   4,879.78x = 110,244,093.83
5. Step 5: Solve for x
   x = 110,244,093.83/4,879.78
6. Step 6: Final answer
   x = 22,592.02