Finding the Third Proportional to 1,105 and 2,405.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105 : 2,405.31 = 2,405.31 : x
2. Step 2: Convert to fraction form
   1,105/2,405.31 = 2,405.31/x
3. Step 3: Cross multiply
   1,105x = 2,405.31 × 2,405.31
4. Step 4: Simplify right side
   1,105x = 5,785,528.22
5. Step 5: Solve for x
   x = 5,785,528.22/1,105
6. Step 6: Final answer
   x = 5,235.77