Finding the Third Proportional to 3,481,138 and 5,321,786

Step by Step Solution

1. Step 1: Write the proportion equation
   3,481,138 : 5,321,786 = 5,321,786 : x
2. Step 2: Convert to fraction form
   3,481,138/5,321,786 = 5,321,786/x
3. Step 3: Cross multiply
   3,481,138x = 5,321,786 × 5,321,786
4. Step 4: Simplify right side
   3,481,138x = 28,321,406,229,796
5. Step 5: Solve for x
   x = 28,321,406,229,796/3,481,138
6. Step 6: Final answer
   x = 8,135,674.66