Finding the Third Proportional to 4,779.56 and 7,144.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,779.56 : 7,144.31 = 7,144.31 : x
2. Step 2: Convert to fraction form
   4,779.56/7,144.31 = 7,144.31/x
3. Step 3: Cross multiply
   4,779.56x = 7,144.31 × 7,144.31
4. Step 4: Simplify right side
   4,779.56x = 51,041,201.10
5. Step 5: Solve for x
   x = 51,041,201.10/4,779.56
6. Step 6: Final answer
   x = 10,679.05