Finding the Third Proportional to 9,621,747 and 19,400,958

Step by Step Solution

1. Step 1: Write the proportion equation
   9,621,747 : 19,400,958 = 19,400,958 : x
2. Step 2: Convert to fraction form
   9,621,747/19,400,958 = 19,400,958/x
3. Step 3: Cross multiply
   9,621,747x = 19,400,958 × 19,400,958
4. Step 4: Simplify right side
   9,621,747x = 376,397,171,317,764
5. Step 5: Solve for x
   x = 376,397,171,317,764/9,621,747
6. Step 6: Final answer
   x = 39,119,420.97