Finding the Third Proportional to 359,941 and 787,678

Step by Step Solution

1. Step 1: Write the proportion equation
   359,941 : 787,678 = 787,678 : x
2. Step 2: Convert to fraction form
   359,941/787,678 = 787,678/x
3. Step 3: Cross multiply
   359,941x = 787,678 × 787,678
4. Step 4: Simplify right side
   359,941x = 620,436,631,684
5. Step 5: Solve for x
   x = 620,436,631,684/359,941
6. Step 6: Final answer
   x = 1,723,717.59