Finding the Third Proportional to 818,298 and 1,778,238

Step by Step Solution

1. Step 1: Write the proportion equation
   818,298 : 1,778,238 = 1,778,238 : x
2. Step 2: Convert to fraction form
   818,298/1,778,238 = 1,778,238/x
3. Step 3: Cross multiply
   818,298x = 1,778,238 × 1,778,238
4. Step 4: Simplify right side
   818,298x = 3,162,130,384,644
5. Step 5: Solve for x
   x = 3,162,130,384,644/818,298
6. Step 6: Final answer
   x = 3,864,277.30