Finding the Third Proportional to 359,939.25 and 787,673.25

Step by Step Solution

1. Step 1: Write the proportion equation
   359,939.25 : 787,673.25 = 787,673.25 : x
2. Step 2: Convert to fraction form
   359,939.25/787,673.25 = 787,673.25/x
3. Step 3: Cross multiply
   359,939.25x = 787,673.25 × 787,673.25
4. Step 4: Simplify right side
   359,939.25x = 620,429,148,765.56
5. Step 5: Solve for x
   x = 620,429,148,765.56/359,939.25
6. Step 6: Final answer
   x = 1,723,705.18