Finding the Third Proportional to 578,994 and 1,275,783

Step by Step Solution

1. Step 1: Write the proportion equation
   578,994 : 1,275,783 = 1,275,783 : x
2. Step 2: Convert to fraction form
   578,994/1,275,783 = 1,275,783/x
3. Step 3: Cross multiply
   578,994x = 1,275,783 × 1,275,783
4. Step 4: Simplify right side
   578,994x = 1,627,622,263,089
5. Step 5: Solve for x
   x = 1,627,622,263,089/578,994
6. Step 6: Final answer
   x = 2,811,121.12