Finding the Third Proportional to 3,219,288 and 4,356,540

Step by Step Solution

1. Step 1: Write the proportion equation
   3,219,288 : 4,356,540 = 4,356,540 : x
2. Step 2: Convert to fraction form
   3,219,288/4,356,540 = 4,356,540/x
3. Step 3: Cross multiply
   3,219,288x = 4,356,540 × 4,356,540
4. Step 4: Simplify right side
   3,219,288x = 18,979,440,771,600
5. Step 5: Solve for x
   x = 18,979,440,771,600/3,219,288
6. Step 6: Final answer
   x = 5,895,539.87