Finding the Third Proportional to 1,216,866 and 1,891,671

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,866 : 1,891,671 = 1,891,671 : x
2. Step 2: Convert to fraction form
   1,216,866/1,891,671 = 1,891,671/x
3. Step 3: Cross multiply
   1,216,866x = 1,891,671 × 1,891,671
4. Step 4: Simplify right side
   1,216,866x = 3,578,419,172,241
5. Step 5: Solve for x
   x = 3,578,419,172,241/1,216,866
6. Step 6: Final answer
   x = 2,940,684.65