Finding the Third Proportional to 819,471 and 1,788,378

Step by Step Solution

1. Step 1: Write the proportion equation
   819,471 : 1,788,378 = 1,788,378 : x
2. Step 2: Convert to fraction form
   819,471/1,788,378 = 1,788,378/x
3. Step 3: Cross multiply
   819,471x = 1,788,378 × 1,788,378
4. Step 4: Simplify right side
   819,471x = 3,198,295,870,884
5. Step 5: Solve for x
   x = 3,198,295,870,884/819,471
6. Step 6: Final answer
   x = 3,902,878.65