Finding the Third Proportional to 6,139,476 and 8,587,782

Step by Step Solution

1. Step 1: Write the proportion equation
   6,139,476 : 8,587,782 = 8,587,782 : x
2. Step 2: Convert to fraction form
   6,139,476/8,587,782 = 8,587,782/x
3. Step 3: Cross multiply
   6,139,476x = 8,587,782 × 8,587,782
4. Step 4: Simplify right side
   6,139,476x = 73,749,999,679,524
5. Step 5: Solve for x
   x = 73,749,999,679,524/6,139,476
6. Step 6: Final answer
   x = 12,012,425.76