Finding the Third Proportional to 72,173 and 108,578

Step by Step Solution

1. Step 1: Write the proportion equation
   72,173 : 108,578 = 108,578 : x
2. Step 2: Convert to fraction form
   72,173/108,578 = 108,578/x
3. Step 3: Cross multiply
   72,173x = 108,578 × 108,578
4. Step 4: Simplify right side
   72,173x = 11,789,182,084
5. Step 5: Solve for x
   x = 11,789,182,084/72,173
6. Step 6: Final answer
   x = 163,346.16