Finding the Third Proportional to 15.31 and 33.63

Step by Step Solution

1. Step 1: Write the proportion equation
   15.31 : 33.63 = 33.63 : x
2. Step 2: Convert to fraction form
   15.31/33.63 = 33.63/x
3. Step 3: Cross multiply
   15.31x = 33.63 × 33.63
4. Step 4: Simplify right side
   15.31x = 1,130.64
5. Step 5: Solve for x
   x = 1,130.64/15.31
6. Step 6: Final answer
   x = 73.84