Finding the Third Proportional to 3,668,876 and 5,558,718

Step by Step Solution

1. Step 1: Write the proportion equation
   3,668,876 : 5,558,718 = 5,558,718 : x
2. Step 2: Convert to fraction form
   3,668,876/5,558,718 = 5,558,718/x
3. Step 3: Cross multiply
   3,668,876x = 5,558,718 × 5,558,718
4. Step 4: Simplify right side
   3,668,876x = 30,899,345,803,524
5. Step 5: Solve for x
   x = 30,899,345,803,524/3,668,876
6. Step 6: Final answer
   x = 8,422,019.66