Finding the Third Proportional to 3,965,608 and 8,506,520

Step by Step Solution

1. Step 1: Write the proportion equation
   3,965,608 : 8,506,520 = 8,506,520 : x
2. Step 2: Convert to fraction form
   3,965,608/8,506,520 = 8,506,520/x
3. Step 3: Cross multiply
   3,965,608x = 8,506,520 × 8,506,520
4. Step 4: Simplify right side
   3,965,608x = 72,360,882,510,400
5. Step 5: Solve for x
   x = 72,360,882,510,400/3,965,608
6. Step 6: Final answer
   x = 18,247,109.27