Finding the Third Proportional to 677,434 and 1,039,574

Step by Step Solution

1. Step 1: Write the proportion equation
   677,434 : 1,039,574 = 1,039,574 : x
2. Step 2: Convert to fraction form
   677,434/1,039,574 = 1,039,574/x
3. Step 3: Cross multiply
   677,434x = 1,039,574 × 1,039,574
4. Step 4: Simplify right side
   677,434x = 1,080,714,101,476
5. Step 5: Solve for x
   x = 1,080,714,101,476/677,434
6. Step 6: Final answer
   x = 1,595,305.38