Finding the Third Proportional to 677,424 and 1,039,560

Step by Step Solution

1. Step 1: Write the proportion equation
   677,424 : 1,039,560 = 1,039,560 : x
2. Step 2: Convert to fraction form
   677,424/1,039,560 = 1,039,560/x
3. Step 3: Cross multiply
   677,424x = 1,039,560 × 1,039,560
4. Step 4: Simplify right side
   677,424x = 1,080,684,993,600
5. Step 5: Solve for x
   x = 1,080,684,993,600/677,424
6. Step 6: Final answer
   x = 1,595,285.96