Finding the Third Proportional to 1,919,580 and 4,200,744

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919,580 : 4,200,744 = 4,200,744 : x
2. Step 2: Convert to fraction form
   1,919,580/4,200,744 = 4,200,744/x
3. Step 3: Cross multiply
   1,919,580x = 4,200,744 × 4,200,744
4. Step 4: Simplify right side
   1,919,580x = 17,646,250,153,536
5. Step 5: Solve for x
   x = 17,646,250,153,536/1,919,580
6. Step 6: Final answer
   x = 9,192,766.21