Finding the Third Proportional to 2,100,448 and 4,277,940

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100,448 : 4,277,940 = 4,277,940 : x
2. Step 2: Convert to fraction form
   2,100,448/4,277,940 = 4,277,940/x
3. Step 3: Cross multiply
   2,100,448x = 4,277,940 × 4,277,940
4. Step 4: Simplify right side
   2,100,448x = 18,300,770,643,600
5. Step 5: Solve for x
   x = 18,300,770,643,600/2,100,448
6. Step 6: Final answer
   x = 8,712,793.96