Finding the Third Proportional to 2,811.50 and 3,081.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,811.50 : 3,081.50 = 3,081.50 : x
2. Step 2: Convert to fraction form
   2,811.50/3,081.50 = 3,081.50/x
3. Step 3: Cross multiply
   2,811.50x = 3,081.50 × 3,081.50
4. Step 4: Simplify right side
   2,811.50x = 9,495,642.25
5. Step 5: Solve for x
   x = 9,495,642.25/2,811.50
6. Step 6: Final answer
   x = 3,377.43