Finding the Third Proportional to 2,808.56 and 4,247.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,808.56 : 4,247.72 = 4,247.72 : x
2. Step 2: Convert to fraction form
   2,808.56/4,247.72 = 4,247.72/x
3. Step 3: Cross multiply
   2,808.56x = 4,247.72 × 4,247.72
4. Step 4: Simplify right side
   2,808.56x = 18,043,114.58
5. Step 5: Solve for x
   x = 18,043,114.58/2,808.56
6. Step 6: Final answer
   x = 6,424.32