Finding the Third Proportional to 78,072 and 167,988

Step by Step Solution

1. Step 1: Write the proportion equation
   78,072 : 167,988 = 167,988 : x
2. Step 2: Convert to fraction form
   78,072/167,988 = 167,988/x
3. Step 3: Cross multiply
   78,072x = 167,988 × 167,988
4. Step 4: Simplify right side
   78,072x = 28,219,968,144
5. Step 5: Solve for x
   x = 28,219,968,144/78,072
6. Step 6: Final answer
   x = 361,460.81