Finding the Third Proportional to 778,578 and 1,673,554

Step by Step Solution

1. Step 1: Write the proportion equation
   778,578 : 1,673,554 = 1,673,554 : x
2. Step 2: Convert to fraction form
   778,578/1,673,554 = 1,673,554/x
3. Step 3: Cross multiply
   778,578x = 1,673,554 × 1,673,554
4. Step 4: Simplify right side
   778,578x = 2,800,782,990,916
5. Step 5: Solve for x
   x = 2,800,782,990,916/778,578
6. Step 6: Final answer
   x = 3,597,305.59