Finding the Third Proportional to 67,608 and 139,944

Step by Step Solution

1. Step 1: Write the proportion equation
   67,608 : 139,944 = 139,944 : x
2. Step 2: Convert to fraction form
   67,608/139,944 = 139,944/x
3. Step 3: Cross multiply
   67,608x = 139,944 × 139,944
4. Step 4: Simplify right side
   67,608x = 19,584,323,136
5. Step 5: Solve for x
   x = 19,584,323,136/67,608
6. Step 6: Final answer
   x = 289,674.64