Finding the Third Proportional to 388,811.25 and 634,896

Step by Step Solution

1. Step 1: Write the proportion equation
   388,811.25 : 634,896 = 634,896 : x
2. Step 2: Convert to fraction form
   388,811.25/634,896 = 634,896/x
3. Step 3: Cross multiply
   388,811.25x = 634,896 × 634,896
4. Step 4: Simplify right side
   388,811.25x = 403,092,930,816
5. Step 5: Solve for x
   x = 403,092,930,816/388,811.25
6. Step 6: Final answer
   x = 1,036,731.66