Finding the Third Proportional to 985,780 and 1,485,678

Step by Step Solution

1. Step 1: Write the proportion equation
   985,780 : 1,485,678 = 1,485,678 : x
2. Step 2: Convert to fraction form
   985,780/1,485,678 = 1,485,678/x
3. Step 3: Cross multiply
   985,780x = 1,485,678 × 1,485,678
4. Step 4: Simplify right side
   985,780x = 2,207,239,119,684
5. Step 5: Solve for x
   x = 2,207,239,119,684/985,780
6. Step 6: Final answer
   x = 2,239,078.82