Finding the Third Proportional to 2,172,204 and 4,402,620

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172,204 : 4,402,620 = 4,402,620 : x
2. Step 2: Convert to fraction form
   2,172,204/4,402,620 = 4,402,620/x
3. Step 3: Cross multiply
   2,172,204x = 4,402,620 × 4,402,620
4. Step 4: Simplify right side
   2,172,204x = 19,383,062,864,400
5. Step 5: Solve for x
   x = 19,383,062,864,400/2,172,204
6. Step 6: Final answer
   x = 8,923,224.00