Finding the Third Proportional to 1,636,874 and 3,557,086

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636,874 : 3,557,086 = 3,557,086 : x
2. Step 2: Convert to fraction form
   1,636,874/3,557,086 = 3,557,086/x
3. Step 3: Cross multiply
   1,636,874x = 3,557,086 × 3,557,086
4. Step 4: Simplify right side
   1,636,874x = 12,652,860,811,396
5. Step 5: Solve for x
   x = 12,652,860,811,396/1,636,874
6. Step 6: Final answer
   x = 7,729,892.96