Finding the Third Proportional to 2,129,427 and 4,644,224

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,427 : 4,644,224 = 4,644,224 : x
2. Step 2: Convert to fraction form
   2,129,427/4,644,224 = 4,644,224/x
3. Step 3: Cross multiply
   2,129,427x = 4,644,224 × 4,644,224
4. Step 4: Simplify right side
   2,129,427x = 21,568,816,562,176
5. Step 5: Solve for x
   x = 21,568,816,562,176/2,129,427
6. Step 6: Final answer
   x = 10,128,929.78