Finding the Third Proportional to 68,222 and 144,676

Step by Step Solution

1. Step 1: Write the proportion equation
   68,222 : 144,676 = 144,676 : x
2. Step 2: Convert to fraction form
   68,222/144,676 = 144,676/x
3. Step 3: Cross multiply
   68,222x = 144,676 × 144,676
4. Step 4: Simplify right side
   68,222x = 20,931,144,976
5. Step 5: Solve for x
   x = 20,931,144,976/68,222
6. Step 6: Final answer
   x = 306,809.31