Finding the Third Proportional to 144,978 and 216,792

Step by Step Solution

1. Step 1: Write the proportion equation
   144,978 : 216,792 = 216,792 : x
2. Step 2: Convert to fraction form
   144,978/216,792 = 216,792/x
3. Step 3: Cross multiply
   144,978x = 216,792 × 216,792
4. Step 4: Simplify right side
   144,978x = 46,998,771,264
5. Step 5: Solve for x
   x = 46,998,771,264/144,978
6. Step 6: Final answer
   x = 324,178.64