Finding the Third Proportional to 35.81 and 53.81

Step by Step Solution

1. Step 1: Write the proportion equation
   35.81 : 53.81 = 53.81 : x
2. Step 2: Convert to fraction form
   35.81/53.81 = 53.81/x
3. Step 3: Cross multiply
   35.81x = 53.81 × 53.81
4. Step 4: Simplify right side
   35.81x = 2,895.79
5. Step 5: Solve for x
   x = 2,895.79/35.81
6. Step 6: Final answer
   x = 80.86