Finding the Third Proportional to 1,216,854 and 1,891,654

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,854 : 1,891,654 = 1,891,654 : x
2. Step 2: Convert to fraction form
   1,216,854/1,891,654 = 1,891,654/x
3. Step 3: Cross multiply
   1,216,854x = 1,891,654 × 1,891,654
4. Step 4: Simplify right side
   1,216,854x = 3,578,354,855,716
5. Step 5: Solve for x
   x = 3,578,354,855,716/1,216,854
6. Step 6: Final answer
   x = 2,940,660.80