Finding the Third Proportional to 978,918 and 1,378,554

Step by Step Solution

1. Step 1: Write the proportion equation
   978,918 : 1,378,554 = 1,378,554 : x
2. Step 2: Convert to fraction form
   978,918/1,378,554 = 1,378,554/x
3. Step 3: Cross multiply
   978,918x = 1,378,554 × 1,378,554
4. Step 4: Simplify right side
   978,918x = 1,900,411,130,916
5. Step 5: Solve for x
   x = 1,900,411,130,916/978,918
6. Step 6: Final answer
   x = 1,941,338.43