Finding the Third Proportional to 72,168 and 167,072

Step by Step Solution

1. Step 1: Write the proportion equation
   72,168 : 167,072 = 167,072 : x
2. Step 2: Convert to fraction form
   72,168/167,072 = 167,072/x
3. Step 3: Cross multiply
   72,168x = 167,072 × 167,072
4. Step 4: Simplify right side
   72,168x = 27,913,053,184
5. Step 5: Solve for x
   x = 27,913,053,184/72,168
6. Step 6: Final answer
   x = 386,778.81