Finding the Third Proportional to 9,407,442 and 19,945,293

Step by Step Solution

1. Step 1: Write the proportion equation
   9,407,442 : 19,945,293 = 19,945,293 : x
2. Step 2: Convert to fraction form
   9,407,442/19,945,293 = 19,945,293/x
3. Step 3: Cross multiply
   9,407,442x = 19,945,293 × 19,945,293
4. Step 4: Simplify right side
   9,407,442x = 397,814,712,855,849
5. Step 5: Solve for x
   x = 397,814,712,855,849/9,407,442
6. Step 6: Final answer
   x = 42,287,235.24