Finding the Third Proportional to 139,304 and 300,772

Step by Step Solution

1. Step 1: Write the proportion equation
   139,304 : 300,772 = 300,772 : x
2. Step 2: Convert to fraction form
   139,304/300,772 = 300,772/x
3. Step 3: Cross multiply
   139,304x = 300,772 × 300,772
4. Step 4: Simplify right side
   139,304x = 90,463,795,984
5. Step 5: Solve for x
   x = 90,463,795,984/139,304
6. Step 6: Final answer
   x = 649,398.41