Finding the Third Proportional to 2,021,445 and 4,422,690

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021,445 : 4,422,690 = 4,422,690 : x
2. Step 2: Convert to fraction form
   2,021,445/4,422,690 = 4,422,690/x
3. Step 3: Cross multiply
   2,021,445x = 4,422,690 × 4,422,690
4. Step 4: Simplify right side
   2,021,445x = 19,560,186,836,100
5. Step 5: Solve for x
   x = 19,560,186,836,100/2,021,445
6. Step 6: Final answer
   x = 9,676,338.87