Finding the Third Proportional to 3,762,909 and 8,256,600

Step by Step Solution

1. Step 1: Write the proportion equation
   3,762,909 : 8,256,600 = 8,256,600 : x
2. Step 2: Convert to fraction form
   3,762,909/8,256,600 = 8,256,600/x
3. Step 3: Cross multiply
   3,762,909x = 8,256,600 × 8,256,600
4. Step 4: Simplify right side
   3,762,909x = 68,171,443,560,000
5. Step 5: Solve for x
   x = 68,171,443,560,000/3,762,909
6. Step 6: Final answer
   x = 18,116,686.73