Finding the Third Proportional to 3,328.50 and 5,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,328.50 : 5,221.50 = 5,221.50 : x
2. Step 2: Convert to fraction form
   3,328.50/5,221.50 = 5,221.50/x
3. Step 3: Cross multiply
   3,328.50x = 5,221.50 × 5,221.50
4. Step 4: Simplify right side
   3,328.50x = 27,264,062.25
5. Step 5: Solve for x
   x = 27,264,062.25/3,328.50
6. Step 6: Final answer
   x = 8,191.10