Finding the Third Proportional to 1,447,686 and 2,129,436

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447,686 : 2,129,436 = 2,129,436 : x
2. Step 2: Convert to fraction form
   1,447,686/2,129,436 = 2,129,436/x
3. Step 3: Cross multiply
   1,447,686x = 2,129,436 × 2,129,436
4. Step 4: Simplify right side
   1,447,686x = 4,534,497,678,096
5. Step 5: Solve for x
   x = 4,534,497,678,096/1,447,686
6. Step 6: Final answer
   x = 3,132,238.40