Finding the Third Proportional to 1,939,658 and 4,215,058

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939,658 : 4,215,058 = 4,215,058 : x
2. Step 2: Convert to fraction form
   1,939,658/4,215,058 = 4,215,058/x
3. Step 3: Cross multiply
   1,939,658x = 4,215,058 × 4,215,058
4. Step 4: Simplify right side
   1,939,658x = 17,766,713,943,364
5. Step 5: Solve for x
   x = 17,766,713,943,364/1,939,658
6. Step 6: Final answer
   x = 9,159,714.72