Finding the Third Proportional to 3,481,140 and 5,321,789

Step by Step Solution

1. Step 1: Write the proportion equation
   3,481,140 : 5,321,789 = 5,321,789 : x
2. Step 2: Convert to fraction form
   3,481,140/5,321,789 = 5,321,789/x
3. Step 3: Cross multiply
   3,481,140x = 5,321,789 × 5,321,789
4. Step 4: Simplify right side
   3,481,140x = 28,321,438,160,521
5. Step 5: Solve for x
   x = 28,321,438,160,521/3,481,140
6. Step 6: Final answer
   x = 8,135,679.16