Finding the Third Proportional to 400,956.50 and 871,861

Step by Step Solution

1. Step 1: Write the proportion equation
   400,956.50 : 871,861 = 871,861 : x
2. Step 2: Convert to fraction form
   400,956.50/871,861 = 871,861/x
3. Step 3: Cross multiply
   400,956.50x = 871,861 × 871,861
4. Step 4: Simplify right side
   400,956.50x = 760,141,603,321
5. Step 5: Solve for x
   x = 760,141,603,321/400,956.50
6. Step 6: Final answer
   x = 1,895,820.63