Finding the Third Proportional to 2,491.70 and 3,411.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,491.70 : 3,411.85 = 3,411.85 : x
2. Step 2: Convert to fraction form
   2,491.70/3,411.85 = 3,411.85/x
3. Step 3: Cross multiply
   2,491.70x = 3,411.85 × 3,411.85
4. Step 4: Simplify right side
   2,491.70x = 11,640,707.76
5. Step 5: Solve for x
   x = 11,640,707.76/2,491.70
6. Step 6: Final answer
   x = 4,671.79