Finding the Third Proportional to 5,539,764 and 8,287,512

Step by Step Solution

1. Step 1: Write the proportion equation
   5,539,764 : 8,287,512 = 8,287,512 : x
2. Step 2: Convert to fraction form
   5,539,764/8,287,512 = 8,287,512/x
3. Step 3: Cross multiply
   5,539,764x = 8,287,512 × 8,287,512
4. Step 4: Simplify right side
   5,539,764x = 68,682,855,150,144
5. Step 5: Solve for x
   x = 68,682,855,150,144/5,539,764
6. Step 6: Final answer
   x = 12,398,155.44