Finding the Third Proportional to 9,428,726 and 20,709,193

Step by Step Solution

1. Step 1: Write the proportion equation
   9,428,726 : 20,709,193 = 20,709,193 : x
2. Step 2: Convert to fraction form
   9,428,726/20,709,193 = 20,709,193/x
3. Step 3: Cross multiply
   9,428,726x = 20,709,193 × 20,709,193
4. Step 4: Simplify right side
   9,428,726x = 428,870,674,711,249
5. Step 5: Solve for x
   x = 428,870,674,711,249/9,428,726
6. Step 6: Final answer
   x = 45,485,537.99