Finding the Third Proportional to 2,211,871 and 2,988,378

Step by Step Solution

1. Step 1: Write the proportion equation
   2,211,871 : 2,988,378 = 2,988,378 : x
2. Step 2: Convert to fraction form
   2,211,871/2,988,378 = 2,988,378/x
3. Step 3: Cross multiply
   2,211,871x = 2,988,378 × 2,988,378
4. Step 4: Simplify right side
   2,211,871x = 8,930,403,070,884
5. Step 5: Solve for x
   x = 8,930,403,070,884/2,211,871
6. Step 6: Final answer
   x = 4,037,488.20