Finding the Third Proportional to 395,811 and 864,204.75

Step by Step Solution

1. Step 1: Write the proportion equation
   395,811 : 864,204.75 = 864,204.75 : x
2. Step 2: Convert to fraction form
   395,811/864,204.75 = 864,204.75/x
3. Step 3: Cross multiply
   395,811x = 864,204.75 × 864,204.75
4. Step 4: Simplify right side
   395,811x = 746,849,849,922.56
5. Step 5: Solve for x
   x = 746,849,849,922.56/395,811
6. Step 6: Final answer
   x = 1,886,885.03