Finding the Third Proportional to 400,956 and 871,860

Step by Step Solution

1. Step 1: Write the proportion equation
   400,956 : 871,860 = 871,860 : x
2. Step 2: Convert to fraction form
   400,956/871,860 = 871,860/x
3. Step 3: Cross multiply
   400,956x = 871,860 × 871,860
4. Step 4: Simplify right side
   400,956x = 760,139,859,600
5. Step 5: Solve for x
   x = 760,139,859,600/400,956
6. Step 6: Final answer
   x = 1,895,818.64