Finding the Third Proportional to 2,311.31 and 3,405.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,311.31 : 3,405.94 = 3,405.94 : x
2. Step 2: Convert to fraction form
   2,311.31/3,405.94 = 3,405.94/x
3. Step 3: Cross multiply
   2,311.31x = 3,405.94 × 3,405.94
4. Step 4: Simplify right side
   2,311.31x = 11,600,410.25
5. Step 5: Solve for x
   x = 11,600,410.25/2,311.31
6. Step 6: Final answer
   x = 5,018.97