Finding the Third Proportional to 244,480.78 and 389,016.42

Step by Step Solution

1. Step 1: Write the proportion equation
   244,480.78 : 389,016.42 = 389,016.42 : x
2. Step 2: Convert to fraction form
   244,480.78/389,016.42 = 389,016.42/x
3. Step 3: Cross multiply
   244,480.78x = 389,016.42 × 389,016.42
4. Step 4: Simplify right side
   244,480.78x = 151,333,776,488.43
5. Step 5: Solve for x
   x = 151,333,776,488.43/244,480.78
6. Step 6: Final answer
   x = 619,000.71