Finding the Third Proportional to 1,228,421 and 2,658,058

Step by Step Solution

1. Step 1: Write the proportion equation
   1,228,421 : 2,658,058 = 2,658,058 : x
2. Step 2: Convert to fraction form
   1,228,421/2,658,058 = 2,658,058/x
3. Step 3: Cross multiply
   1,228,421x = 2,658,058 × 2,658,058
4. Step 4: Simplify right side
   1,228,421x = 7,065,272,331,364
5. Step 5: Solve for x
   x = 7,065,272,331,364/1,228,421
6. Step 6: Final answer
   x = 5,751,507.29