Finding the Third Proportional to 71,728 and 151,988

Step by Step Solution

1. Step 1: Write the proportion equation
   71,728 : 151,988 = 151,988 : x
2. Step 2: Convert to fraction form
   71,728/151,988 = 151,988/x
3. Step 3: Cross multiply
   71,728x = 151,988 × 151,988
4. Step 4: Simplify right side
   71,728x = 23,100,352,144
5. Step 5: Solve for x
   x = 23,100,352,144/71,728
6. Step 6: Final answer
   x = 322,054.88