Finding the Third Proportional to 140,274 and 307,728

Step by Step Solution

1. Step 1: Write the proportion equation
   140,274 : 307,728 = 307,728 : x
2. Step 2: Convert to fraction form
   140,274/307,728 = 307,728/x
3. Step 3: Cross multiply
   140,274x = 307,728 × 307,728
4. Step 4: Simplify right side
   140,274x = 94,696,521,984
5. Step 5: Solve for x
   x = 94,696,521,984/140,274
6. Step 6: Final answer
   x = 675,082.50