Finding the Third Proportional to 2,158,455 and 4,662,690

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,455 : 4,662,690 = 4,662,690 : x
2. Step 2: Convert to fraction form
   2,158,455/4,662,690 = 4,662,690/x
3. Step 3: Cross multiply
   2,158,455x = 4,662,690 × 4,662,690
4. Step 4: Simplify right side
   2,158,455x = 21,740,678,036,100
5. Step 5: Solve for x
   x = 21,740,678,036,100/2,158,455
6. Step 6: Final answer
   x = 10,072,333.24