Finding the Third Proportional to 3,857,738 and 5,290,018

Step by Step Solution

1. Step 1: Write the proportion equation
   3,857,738 : 5,290,018 = 5,290,018 : x
2. Step 2: Convert to fraction form
   3,857,738/5,290,018 = 5,290,018/x
3. Step 3: Cross multiply
   3,857,738x = 5,290,018 × 5,290,018
4. Step 4: Simplify right side
   3,857,738x = 27,984,290,440,324
5. Step 5: Solve for x
   x = 27,984,290,440,324/3,857,738
6. Step 6: Final answer
   x = 7,254,067.13