Finding the Third Proportional to 2,129,474 and 4,644,332

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129,474 : 4,644,332 = 4,644,332 : x
2. Step 2: Convert to fraction form
   2,129,474/4,644,332 = 4,644,332/x
3. Step 3: Cross multiply
   2,129,474x = 4,644,332 × 4,644,332
4. Step 4: Simplify right side
   2,129,474x = 21,569,819,726,224
5. Step 5: Solve for x
   x = 21,569,819,726,224/2,129,474
6. Step 6: Final answer
   x = 10,129,177.31