Finding the Third Proportional to 287,334 and 613,764

Step by Step Solution

1. Step 1: Write the proportion equation
   287,334 : 613,764 = 613,764 : x
2. Step 2: Convert to fraction form
   287,334/613,764 = 613,764/x
3. Step 3: Cross multiply
   287,334x = 613,764 × 613,764
4. Step 4: Simplify right side
   287,334x = 376,706,247,696
5. Step 5: Solve for x
   x = 376,706,247,696/287,334
6. Step 6: Final answer
   x = 1,311,039.58