Finding the Third Proportional to 1,691,618 and 3,647,306

Step by Step Solution

1. Step 1: Write the proportion equation
   1,691,618 : 3,647,306 = 3,647,306 : x
2. Step 2: Convert to fraction form
   1,691,618/3,647,306 = 3,647,306/x
3. Step 3: Cross multiply
   1,691,618x = 3,647,306 × 3,647,306
4. Step 4: Simplify right side
   1,691,618x = 13,302,841,057,636
5. Step 5: Solve for x
   x = 13,302,841,057,636/1,691,618
6. Step 6: Final answer
   x = 7,863,974.64