Finding the Third Proportional to 2,043,836 and 4,218,872

Step by Step Solution

1. Step 1: Write the proportion equation
   2,043,836 : 4,218,872 = 4,218,872 : x
2. Step 2: Convert to fraction form
   2,043,836/4,218,872 = 4,218,872/x
3. Step 3: Cross multiply
   2,043,836x = 4,218,872 × 4,218,872
4. Step 4: Simplify right side
   2,043,836x = 17,798,880,952,384
5. Step 5: Solve for x
   x = 17,798,880,952,384/2,043,836
6. Step 6: Final answer
   x = 8,708,566.12