Finding the Third Proportional to 105.75 and 164.81

Step by Step Solution

1. Step 1: Write the proportion equation
   105.75 : 164.81 = 164.81 : x
2. Step 2: Convert to fraction form
   105.75/164.81 = 164.81/x
3. Step 3: Cross multiply
   105.75x = 164.81 × 164.81
4. Step 4: Simplify right side
   105.75x = 27,163.16
5. Step 5: Solve for x
   x = 27,163.16/105.75
6. Step 6: Final answer
   x = 256.86