Finding the Third Proportional to 665,436 and 1,442,972

Step by Step Solution

1. Step 1: Write the proportion equation
   665,436 : 1,442,972 = 1,442,972 : x
2. Step 2: Convert to fraction form
   665,436/1,442,972 = 1,442,972/x
3. Step 3: Cross multiply
   665,436x = 1,442,972 × 1,442,972
4. Step 4: Simplify right side
   665,436x = 2,082,168,192,784
5. Step 5: Solve for x
   x = 2,082,168,192,784/665,436
6. Step 6: Final answer
   x = 3,129,028.48