Finding the Third Proportional to 2,140.50 and 3,319.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140.50 : 3,319.50 = 3,319.50 : x
2. Step 2: Convert to fraction form
   2,140.50/3,319.50 = 3,319.50/x
3. Step 3: Cross multiply
   2,140.50x = 3,319.50 × 3,319.50
4. Step 4: Simplify right side
   2,140.50x = 11,019,080.25
5. Step 5: Solve for x
   x = 11,019,080.25/2,140.50
6. Step 6: Final answer
   x = 5,147.90