Finding the Third Proportional to 1,216,862 and 1,891,667

Step by Step Solution

1. Step 1: Write the proportion equation
   1,216,862 : 1,891,667 = 1,891,667 : x
2. Step 2: Convert to fraction form
   1,216,862/1,891,667 = 1,891,667/x
3. Step 3: Cross multiply
   1,216,862x = 1,891,667 × 1,891,667
4. Step 4: Simplify right side
   1,216,862x = 3,578,404,038,889
5. Step 5: Solve for x
   x = 3,578,404,038,889/1,216,862
6. Step 6: Final answer
   x = 2,940,681.88