Finding the Third Proportional to 2,158,443 and 4,662,666

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,443 : 4,662,666 = 4,662,666 : x
2. Step 2: Convert to fraction form
   2,158,443/4,662,666 = 4,662,666/x
3. Step 3: Cross multiply
   2,158,443x = 4,662,666 × 4,662,666
4. Step 4: Simplify right side
   2,158,443x = 21,740,454,227,556
5. Step 5: Solve for x
   x = 21,740,454,227,556/2,158,443
6. Step 6: Final answer
   x = 10,072,285.54