Finding the Third Proportional to 778,392 and 1,676,864

Step by Step Solution

1. Step 1: Write the proportion equation
   778,392 : 1,676,864 = 1,676,864 : x
2. Step 2: Convert to fraction form
   778,392/1,676,864 = 1,676,864/x
3. Step 3: Cross multiply
   778,392x = 1,676,864 × 1,676,864
4. Step 4: Simplify right side
   778,392x = 2,811,872,874,496
5. Step 5: Solve for x
   x = 2,811,872,874,496/778,392
6. Step 6: Final answer
   x = 3,612,412.35