Finding the Third Proportional to 3,215,600 and 5,118,600

Step by Step Solution

1. Step 1: Write the proportion equation
   3,215,600 : 5,118,600 = 5,118,600 : x
2. Step 2: Convert to fraction form
   3,215,600/5,118,600 = 5,118,600/x
3. Step 3: Cross multiply
   3,215,600x = 5,118,600 × 5,118,600
4. Step 4: Simplify right side
   3,215,600x = 26,200,065,960,000
5. Step 5: Solve for x
   x = 26,200,065,960,000/3,215,600
6. Step 6: Final answer
   x = 8,147,800.09