Finding the Third Proportional to 72.94 and 168.56

Step by Step Solution

1. Step 1: Write the proportion equation
   72.94 : 168.56 = 168.56 : x
2. Step 2: Convert to fraction form
   72.94/168.56 = 168.56/x
3. Step 3: Cross multiply
   72.94x = 168.56 × 168.56
4. Step 4: Simplify right side
   72.94x = 28,413.32
5. Step 5: Solve for x
   x = 28,413.32/72.94
6. Step 6: Final answer
   x = 389.56