Finding the Third Proportional to 9,407,398 and 19,945,200

Step by Step Solution

1. Step 1: Write the proportion equation
   9,407,398 : 19,945,200 = 19,945,200 : x
2. Step 2: Convert to fraction form
   9,407,398/19,945,200 = 19,945,200/x
3. Step 3: Cross multiply
   9,407,398x = 19,945,200 × 19,945,200
4. Step 4: Simplify right side
   9,407,398x = 397,811,003,040,000
5. Step 5: Solve for x
   x = 397,811,003,040,000/9,407,398
6. Step 6: Final answer
   x = 42,287,038.67