Finding the Third Proportional to 38.94 and 53.31

Step by Step Solution

1. Step 1: Write the proportion equation
   38.94 : 53.31 = 53.31 : x
2. Step 2: Convert to fraction form
   38.94/53.31 = 53.31/x
3. Step 3: Cross multiply
   38.94x = 53.31 × 53.31
4. Step 4: Simplify right side
   38.94x = 2,842.22
5. Step 5: Solve for x
   x = 2,842.22/38.94
6. Step 6: Final answer
   x = 72.99