Finding the Third Proportional to 4,479,563 and 6,917,378

Step by Step Solution

1. Step 1: Write the proportion equation
   4,479,563 : 6,917,378 = 6,917,378 : x
2. Step 2: Convert to fraction form
   4,479,563/6,917,378 = 6,917,378/x
3. Step 3: Cross multiply
   4,479,563x = 6,917,378 × 6,917,378
4. Step 4: Simplify right side
   4,479,563x = 47,850,118,394,884
5. Step 5: Solve for x
   x = 47,850,118,394,884/4,479,563
6. Step 6: Final answer
   x = 10,681,871.96