Finding the Third Proportional to 978,936 and 1,378,560

Step by Step Solution

1. Step 1: Write the proportion equation
   978,936 : 1,378,560 = 1,378,560 : x
2. Step 2: Convert to fraction form
   978,936/1,378,560 = 1,378,560/x
3. Step 3: Cross multiply
   978,936x = 1,378,560 × 1,378,560
4. Step 4: Simplify right side
   978,936x = 1,900,427,673,600
5. Step 5: Solve for x
   x = 1,900,427,673,600/978,936
6. Step 6: Final answer
   x = 1,941,319.63