Finding the Third Proportional to 4,779.09 and 10,290.56

Step by Step Solution

1. Step 1: Write the proportion equation
   4,779.09 : 10,290.56 = 10,290.56 : x
2. Step 2: Convert to fraction form
   4,779.09/10,290.56 = 10,290.56/x
3. Step 3: Cross multiply
   4,779.09x = 10,290.56 × 10,290.56
4. Step 4: Simplify right side
   4,779.09x = 105,895,676.57
5. Step 5: Solve for x
   x = 105,895,676.57/4,779.09
6. Step 6: Final answer
   x = 22,158.11