Finding the Third Proportional to 244,007 and 389,610

Step by Step Solution

1. Step 1: Write the proportion equation
   244,007 : 389,610 = 389,610 : x
2. Step 2: Convert to fraction form
   244,007/389,610 = 389,610/x
3. Step 3: Cross multiply
   244,007x = 389,610 × 389,610
4. Step 4: Simplify right side
   244,007x = 151,795,952,100
5. Step 5: Solve for x
   x = 151,795,952,100/244,007
6. Step 6: Final answer
   x = 622,096.71