Finding the Third Proportional to 442,845 and 687,595.50

Step by Step Solution

1. Step 1: Write the proportion equation
   442,845 : 687,595.50 = 687,595.50 : x
2. Step 2: Convert to fraction form
   442,845/687,595.50 = 687,595.50/x
3. Step 3: Cross multiply
   442,845x = 687,595.50 × 687,595.50
4. Step 4: Simplify right side
   442,845x = 472,787,571,620.25
5. Step 5: Solve for x
   x = 472,787,571,620.25/442,845
6. Step 6: Final answer
   x = 1,067,614.11