Finding the Third Proportional to 978,766 and 1,378,339

Step by Step Solution

1. Step 1: Write the proportion equation
   978,766 : 1,378,339 = 1,378,339 : x
2. Step 2: Convert to fraction form
   978,766/1,378,339 = 1,378,339/x
3. Step 3: Cross multiply
   978,766x = 1,378,339 × 1,378,339
4. Step 4: Simplify right side
   978,766x = 1,899,818,398,921
5. Step 5: Solve for x
   x = 1,899,818,398,921/978,766
6. Step 6: Final answer
   x = 1,941,034.32