Finding the Third Proportional to 2,171.25 and 4,234.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,171.25 : 4,234.50 = 4,234.50 : x
2. Step 2: Convert to fraction form
   2,171.25/4,234.50 = 4,234.50/x
3. Step 3: Cross multiply
   2,171.25x = 4,234.50 × 4,234.50
4. Step 4: Simplify right side
   2,171.25x = 17,930,990.25
5. Step 5: Solve for x
   x = 17,930,990.25/2,171.25
6. Step 6: Final answer
   x = 8,258.37