Finding the Third Proportional to 15.90 and 33.93

Step by Step Solution

1. Step 1: Write the proportion equation
   15.90 : 33.93 = 33.93 : x
2. Step 2: Convert to fraction form
   15.90/33.93 = 33.93/x
3. Step 3: Cross multiply
   15.90x = 33.93 × 33.93
4. Step 4: Simplify right side
   15.90x = 1,151.56
5. Step 5: Solve for x
   x = 1,151.56/15.90
6. Step 6: Final answer
   x = 72.43