Finding the Third Proportional to 3,630,659 and 7,821,487

Step by Step Solution

1. Step 1: Write the proportion equation
   3,630,659 : 7,821,487 = 7,821,487 : x
2. Step 2: Convert to fraction form
   3,630,659/7,821,487 = 7,821,487/x
3. Step 3: Cross multiply
   3,630,659x = 7,821,487 × 7,821,487
4. Step 4: Simplify right side
   3,630,659x = 61,175,658,891,169
5. Step 5: Solve for x
   x = 61,175,658,891,169/3,630,659
6. Step 6: Final answer
   x = 16,849,739.65