Finding the Third Proportional to 287,578.50 and 604,896

Step by Step Solution

1. Step 1: Write the proportion equation
   287,578.50 : 604,896 = 604,896 : x
2. Step 2: Convert to fraction form
   287,578.50/604,896 = 604,896/x
3. Step 3: Cross multiply
   287,578.50x = 604,896 × 604,896
4. Step 4: Simplify right side
   287,578.50x = 365,899,170,816
5. Step 5: Solve for x
   x = 365,899,170,816/287,578.50
6. Step 6: Final answer
   x = 1,272,345.36