Finding the Third Proportional to 2,935,980 and 4,290,678

Step by Step Solution

1. Step 1: Write the proportion equation
   2,935,980 : 4,290,678 = 4,290,678 : x
2. Step 2: Convert to fraction form
   2,935,980/4,290,678 = 4,290,678/x
3. Step 3: Cross multiply
   2,935,980x = 4,290,678 × 4,290,678
4. Step 4: Simplify right side
   2,935,980x = 18,409,917,699,684
5. Step 5: Solve for x
   x = 18,409,917,699,684/2,935,980
6. Step 6: Final answer
   x = 6,270,450.65