Finding the Third Proportional to 978,890 and 1,378,518

Step by Step Solution

1. Step 1: Write the proportion equation
   978,890 : 1,378,518 = 1,378,518 : x
2. Step 2: Convert to fraction form
   978,890/1,378,518 = 1,378,518/x
3. Step 3: Cross multiply
   978,890x = 1,378,518 × 1,378,518
4. Step 4: Simplify right side
   978,890x = 1,900,311,876,324
5. Step 5: Solve for x
   x = 1,900,311,876,324/978,890
6. Step 6: Final answer
   x = 1,941,292.56