Finding the Third Proportional to 3,642.75 and 5,458.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,642.75 : 5,458.50 = 5,458.50 : x
2. Step 2: Convert to fraction form
   3,642.75/5,458.50 = 5,458.50/x
3. Step 3: Cross multiply
   3,642.75x = 5,458.50 × 5,458.50
4. Step 4: Simplify right side
   3,642.75x = 29,795,222.25
5. Step 5: Solve for x
   x = 29,795,222.25/3,642.75
6. Step 6: Final answer
   x = 8,179.32