Finding the Third Proportional to 408,997.69 and 874,856.81

Step by Step Solution

1. Step 1: Write the proportion equation
   408,997.69 : 874,856.81 = 874,856.81 : x
2. Step 2: Convert to fraction form
   408,997.69/874,856.81 = 874,856.81/x
3. Step 3: Cross multiply
   408,997.69x = 874,856.81 × 874,856.81
4. Step 4: Simplify right side
   408,997.69x = 765,374,442,377.66
5. Step 5: Solve for x
   x = 765,374,442,377.66/408,997.69
6. Step 6: Final answer
   x = 1,871,341.74