Finding the Third Proportional to 34.31 and 72.94

Step by Step Solution

1. Step 1: Write the proportion equation
   34.31 : 72.94 = 72.94 : x
2. Step 2: Convert to fraction form
   34.31/72.94 = 72.94/x
3. Step 3: Cross multiply
   34.31x = 72.94 × 72.94
4. Step 4: Simplify right side
   34.31x = 5,319.88
5. Step 5: Solve for x
   x = 5,319.88/34.31
6. Step 6: Final answer
   x = 155.04