Finding the Third Proportional to 78.75 and 162.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78.75 : 162.56 = 162.56 : x
2. Step 2: Convert to fraction form
   78.75/162.56 = 162.56/x
3. Step 3: Cross multiply
   78.75x = 162.56 × 162.56
4. Step 4: Simplify right side
   78.75x = 26,426.57
5. Step 5: Solve for x
   x = 26,426.57/78.75
6. Step 6: Final answer
   x = 335.58