Finding the Third Proportional to 4,193,618 and 9,187,630

Step by Step Solution

1. Step 1: Write the proportion equation
   4,193,618 : 9,187,630 = 9,187,630 : x
2. Step 2: Convert to fraction form
   4,193,618/9,187,630 = 9,187,630/x
3. Step 3: Cross multiply
   4,193,618x = 9,187,630 × 9,187,630
4. Step 4: Simplify right side
   4,193,618x = 84,412,545,016,900
5. Step 5: Solve for x
   x = 84,412,545,016,900/4,193,618
6. Step 6: Final answer
   x = 20,128,811.21