Finding the Third Proportional to 68,928 and 142,976

Step by Step Solution

1. Step 1: Write the proportion equation
   68,928 : 142,976 = 142,976 : x
2. Step 2: Convert to fraction form
   68,928/142,976 = 142,976/x
3. Step 3: Cross multiply
   68,928x = 142,976 × 142,976
4. Step 4: Simplify right side
   68,928x = 20,442,136,576
5. Step 5: Solve for x
   x = 20,442,136,576/68,928
6. Step 6: Final answer
   x = 296,572.32