Finding the Third Proportional to 978,909 and 1,378,548

Step by Step Solution

1. Step 1: Write the proportion equation
   978,909 : 1,378,548 = 1,378,548 : x
2. Step 2: Convert to fraction form
   978,909/1,378,548 = 1,378,548/x
3. Step 3: Cross multiply
   978,909x = 1,378,548 × 1,378,548
4. Step 4: Simplify right side
   978,909x = 1,900,394,588,304
5. Step 5: Solve for x
   x = 1,900,394,588,304/978,909
6. Step 6: Final answer
   x = 1,941,339.38