Finding the Third Proportional to 2,121,858 and 4,341,753

Step by Step Solution

1. Step 1: Write the proportion equation
   2,121,858 : 4,341,753 = 4,341,753 : x
2. Step 2: Convert to fraction form
   2,121,858/4,341,753 = 4,341,753/x
3. Step 3: Cross multiply
   2,121,858x = 4,341,753 × 4,341,753
4. Step 4: Simplify right side
   2,121,858x = 18,850,819,113,009
5. Step 5: Solve for x
   x = 18,850,819,113,009/2,121,858
6. Step 6: Final answer
   x = 8,884,109.64