Finding the Third Proportional to 3,668,880 and 5,558,724

Step by Step Solution

1. Step 1: Write the proportion equation
   3,668,880 : 5,558,724 = 5,558,724 : x
2. Step 2: Convert to fraction form
   3,668,880/5,558,724 = 5,558,724/x
3. Step 3: Cross multiply
   3,668,880x = 5,558,724 × 5,558,724
4. Step 4: Simplify right side
   3,668,880x = 30,899,412,508,176
5. Step 5: Solve for x
   x = 30,899,412,508,176/3,668,880
6. Step 6: Final answer
   x = 8,422,028.66