Finding the Third Proportional to 1,443,128 and 3,137,436

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443,128 : 3,137,436 = 3,137,436 : x
2. Step 2: Convert to fraction form
   1,443,128/3,137,436 = 3,137,436/x
3. Step 3: Cross multiply
   1,443,128x = 3,137,436 × 3,137,436
4. Step 4: Simplify right side
   1,443,128x = 9,843,504,654,096
5. Step 5: Solve for x
   x = 9,843,504,654,096/1,443,128
6. Step 6: Final answer
   x = 6,820,950.50