Finding the Third Proportional to 3,558,647 and 7,369,638

Step by Step Solution

1. Step 1: Write the proportion equation
   3,558,647 : 7,369,638 = 7,369,638 : x
2. Step 2: Convert to fraction form
   3,558,647/7,369,638 = 7,369,638/x
3. Step 3: Cross multiply
   3,558,647x = 7,369,638 × 7,369,638
4. Step 4: Simplify right side
   3,558,647x = 54,311,564,251,044
5. Step 5: Solve for x
   x = 54,311,564,251,044/3,558,647
6. Step 6: Final answer
   x = 15,261,857.74