Finding the Third Proportional to 3,886,762 and 8,538,740

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886,762 : 8,538,740 = 8,538,740 : x
2. Step 2: Convert to fraction form
   3,886,762/8,538,740 = 8,538,740/x
3. Step 3: Cross multiply
   3,886,762x = 8,538,740 × 8,538,740
4. Step 4: Simplify right side
   3,886,762x = 72,910,080,787,600
5. Step 5: Solve for x
   x = 72,910,080,787,600/3,886,762
6. Step 6: Final answer
   x = 18,758,565.82