Finding the Third Proportional to 2,143,740 and 4,463,890

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143,740 : 4,463,890 = 4,463,890 : x
2. Step 2: Convert to fraction form
   2,143,740/4,463,890 = 4,463,890/x
3. Step 3: Cross multiply
   2,143,740x = 4,463,890 × 4,463,890
4. Step 4: Simplify right side
   2,143,740x = 19,926,313,932,100
5. Step 5: Solve for x
   x = 19,926,313,932,100/2,143,740
6. Step 6: Final answer
   x = 9,295,116.91