Finding the Third Proportional to 2,129,874 and 4,584,519

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,874 : 4,584,519 = 4,584,519 : x
2. Step 2: Convert to fraction form
   2,129,874/4,584,519 = 4,584,519/x
3. Step 3: Cross multiply
   2,129,874x = 4,584,519 × 4,584,519
4. Step 4: Simplify right side
   2,129,874x = 21,017,814,461,361
5. Step 5: Solve for x
   x = 21,017,814,461,361/2,129,874
6. Step 6: Final answer
   x = 9,868,102.27