Finding the Third Proportional to 287,234 and 613,562

Step by Step Solution

1. Step 1: Write the proportion equation
   287,234 : 613,562 = 613,562 : x
2. Step 2: Convert to fraction form
   287,234/613,562 = 613,562/x
3. Step 3: Cross multiply
   287,234x = 613,562 × 613,562
4. Step 4: Simplify right side
   287,234x = 376,458,327,844
5. Step 5: Solve for x
   x = 376,458,327,844/287,234
6. Step 6: Final answer
   x = 1,310,632.89