Finding the Third Proportional to 917,768 and 1,968,393

Step by Step Solution

1. Step 1: Write the proportion equation
   917,768 : 1,968,393 = 1,968,393 : x
2. Step 2: Convert to fraction form
   917,768/1,968,393 = 1,968,393/x
3. Step 3: Cross multiply
   917,768x = 1,968,393 × 1,968,393
4. Step 4: Simplify right side
   917,768x = 3,874,571,002,449
5. Step 5: Solve for x
   x = 3,874,571,002,449/917,768
6. Step 6: Final answer
   x = 4,221,732.51