Finding the Third Proportional to 253,570.50 and 394,896

Step by Step Solution

1. Step 1: Write the proportion equation
   253,570.50 : 394,896 = 394,896 : x
2. Step 2: Convert to fraction form
   253,570.50/394,896 = 394,896/x
3. Step 3: Cross multiply
   253,570.50x = 394,896 × 394,896
4. Step 4: Simplify right side
   253,570.50x = 155,942,850,816
5. Step 5: Solve for x
   x = 155,942,850,816/253,570.50
6. Step 6: Final answer
   x = 614,988.14