Finding the Third Proportional to 3,992,958 and 8,685,526

Step by Step Solution

1. Step 1: Write the proportion equation
   3,992,958 : 8,685,526 = 8,685,526 : x
2. Step 2: Convert to fraction form
   3,992,958/8,685,526 = 8,685,526/x
3. Step 3: Cross multiply
   3,992,958x = 8,685,526 × 8,685,526
4. Step 4: Simplify right side
   3,992,958x = 75,438,361,896,676
5. Step 5: Solve for x
   x = 75,438,361,896,676/3,992,958
6. Step 6: Final answer
   x = 18,892,851.34