Finding the Third Proportional to 1,058,212 and 2,221,256

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058,212 : 2,221,256 = 2,221,256 : x
2. Step 2: Convert to fraction form
   1,058,212/2,221,256 = 2,221,256/x
3. Step 3: Cross multiply
   1,058,212x = 2,221,256 × 2,221,256
4. Step 4: Simplify right side
   1,058,212x = 4,933,978,217,536
5. Step 5: Solve for x
   x = 4,933,978,217,536/1,058,212
6. Step 6: Final answer
   x = 4,662,561.20