Finding the Third Proportional to 31,608 and 73,173

Step by Step Solution

1. Step 1: Write the proportion equation
   31,608 : 73,173 = 73,173 : x
2. Step 2: Convert to fraction form
   31,608/73,173 = 73,173/x
3. Step 3: Cross multiply
   31,608x = 73,173 × 73,173
4. Step 4: Simplify right side
   31,608x = 5,354,287,929
5. Step 5: Solve for x
   x = 5,354,287,929/31,608
6. Step 6: Final answer
   x = 169,396.61