Finding the Third Proportional to 2,143,404 and 2,918,862

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143,404 : 2,918,862 = 2,918,862 : x
2. Step 2: Convert to fraction form
   2,143,404/2,918,862 = 2,918,862/x
3. Step 3: Cross multiply
   2,143,404x = 2,918,862 × 2,918,862
4. Step 4: Simplify right side
   2,143,404x = 8,519,755,375,044
5. Step 5: Solve for x
   x = 8,519,755,375,044/2,143,404
6. Step 6: Final answer
   x = 3,974,871.45