Finding the Third Proportional to 864,994 and 1,857,851

Step by Step Solution

1. Step 1: Write the proportion equation
   864,994 : 1,857,851 = 1,857,851 : x
2. Step 2: Convert to fraction form
   864,994/1,857,851 = 1,857,851/x
3. Step 3: Cross multiply
   864,994x = 1,857,851 × 1,857,851
4. Step 4: Simplify right side
   864,994x = 3,451,610,338,201
5. Step 5: Solve for x
   x = 3,451,610,338,201/864,994
6. Step 6: Final answer
   x = 3,990,328.65