Finding the Third Proportional to 74.25 and 164.25

Step by Step Solution

1. Step 1: Write the proportion equation
   74.25 : 164.25 = 164.25 : x
2. Step 2: Convert to fraction form
   74.25/164.25 = 164.25/x
3. Step 3: Cross multiply
   74.25x = 164.25 × 164.25
4. Step 4: Simplify right side
   74.25x = 26,978.06
5. Step 5: Solve for x
   x = 26,978.06/74.25
6. Step 6: Final answer
   x = 363.34