Finding the Third Proportional to 4,016,361 and 8,685,337

Step by Step Solution

1. Step 1: Write the proportion equation
   4,016,361 : 8,685,337 = 8,685,337 : x
2. Step 2: Convert to fraction form
   4,016,361/8,685,337 = 8,685,337/x
3. Step 3: Cross multiply
   4,016,361x = 8,685,337 × 8,685,337
4. Step 4: Simplify right side
   4,016,361x = 75,435,078,803,569
5. Step 5: Solve for x
   x = 75,435,078,803,569/4,016,361
6. Step 6: Final answer
   x = 18,781,946.84