Finding the Third Proportional to 3,886,764 and 8,538,744

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886,764 : 8,538,744 = 8,538,744 : x
2. Step 2: Convert to fraction form
   3,886,764/8,538,744 = 8,538,744/x
3. Step 3: Cross multiply
   3,886,764x = 8,538,744 × 8,538,744
4. Step 4: Simplify right side
   3,886,764x = 72,910,149,097,536
5. Step 5: Solve for x
   x = 72,910,149,097,536/3,886,764
6. Step 6: Final answer
   x = 18,758,573.74