Finding the Third Proportional to 404,782 and 871,858

Step by Step Solution

1. Step 1: Write the proportion equation
   404,782 : 871,858 = 871,858 : x
2. Step 2: Convert to fraction form
   404,782/871,858 = 871,858/x
3. Step 3: Cross multiply
   404,782x = 871,858 × 871,858
4. Step 4: Simplify right side
   404,782x = 760,136,372,164
5. Step 5: Solve for x
   x = 760,136,372,164/404,782
6. Step 6: Final answer
   x = 1,877,890.75