Finding the Third Proportional to 3,886,776 and 8,538,768

Step by Step Solution

1. Step 1: Write the proportion equation
   3,886,776 : 8,538,768 = 8,538,768 : x
2. Step 2: Convert to fraction form
   3,886,776/8,538,768 = 8,538,768/x
3. Step 3: Cross multiply
   3,886,776x = 8,538,768 × 8,538,768
4. Step 4: Simplify right side
   3,886,776x = 72,910,558,957,824
5. Step 5: Solve for x
   x = 72,910,558,957,824/3,886,776
6. Step 6: Final answer
   x = 18,758,621.27