Finding the Third Proportional to 2,617.31 and 5,491.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.31 : 5,491.13 = 5,491.13 : x
2. Step 2: Convert to fraction form
   2,617.31/5,491.13 = 5,491.13/x
3. Step 3: Cross multiply
   2,617.31x = 5,491.13 × 5,491.13
4. Step 4: Simplify right side
   2,617.31x = 30,152,453.77
5. Step 5: Solve for x
   x = 30,152,453.77/2,617.31
6. Step 6: Final answer
   x = 11,520.39