Finding the Third Proportional to 67,680 and 155,988

Step by Step Solution

1. Step 1: Write the proportion equation
   67,680 : 155,988 = 155,988 : x
2. Step 2: Convert to fraction form
   67,680/155,988 = 155,988/x
3. Step 3: Cross multiply
   67,680x = 155,988 × 155,988
4. Step 4: Simplify right side
   67,680x = 24,332,256,144
5. Step 5: Solve for x
   x = 24,332,256,144/67,680
6. Step 6: Final answer
   x = 359,519.15