Finding the Third Proportional to 19,912,400 and 31,288,422

Step by Step Solution

1. Step 1: Write the proportion equation
   19,912,400 : 31,288,422 = 31,288,422 : x
2. Step 2: Convert to fraction form
   19,912,400/31,288,422 = 31,288,422/x
3. Step 3: Cross multiply
   19,912,400x = 31,288,422 × 31,288,422
4. Step 4: Simplify right side
   19,912,400x = 978,965,351,250,084
5. Step 5: Solve for x
   x = 978,965,351,250,084/19,912,400
6. Step 6: Final answer
   x = 49,163,604.15