Finding the Third Proportional to 36.31 and 53.39

Step by Step Solution

1. Step 1: Write the proportion equation
   36.31 : 53.39 = 53.39 : x
2. Step 2: Convert to fraction form
   36.31/53.39 = 53.39/x
3. Step 3: Cross multiply
   36.31x = 53.39 × 53.39
4. Step 4: Simplify right side
   36.31x = 2,850.87
5. Step 5: Solve for x
   x = 2,850.87/36.31
6. Step 6: Final answer
   x = 78.52