Finding the Third Proportional to 1,691,644 and 3,647,356

Step by Step Solution

1. Step 1: Write the proportion equation
   1,691,644 : 3,647,356 = 3,647,356 : x
2. Step 2: Convert to fraction form
   1,691,644/3,647,356 = 3,647,356/x
3. Step 3: Cross multiply
   1,691,644x = 3,647,356 × 3,647,356
4. Step 4: Simplify right side
   1,691,644x = 13,303,205,790,736
5. Step 5: Solve for x
   x = 13,303,205,790,736/1,691,644
6. Step 6: Final answer
   x = 7,864,069.39