Finding the Third Proportional to 778,852 and 1,678,238

Step by Step Solution

1. Step 1: Write the proportion equation
   778,852 : 1,678,238 = 1,678,238 : x
2. Step 2: Convert to fraction form
   778,852/1,678,238 = 1,678,238/x
3. Step 3: Cross multiply
   778,852x = 1,678,238 × 1,678,238
4. Step 4: Simplify right side
   778,852x = 2,816,482,784,644
5. Step 5: Solve for x
   x = 2,816,482,784,644/778,852
6. Step 6: Final answer
   x = 3,616,197.67