Finding the Third Proportional to 361,768.50 and 787,823.50

Step by Step Solution

1. Step 1: Write the proportion equation
   361,768.50 : 787,823.50 = 787,823.50 : x
2. Step 2: Convert to fraction form
   361,768.50/787,823.50 = 787,823.50/x
3. Step 3: Cross multiply
   361,768.50x = 787,823.50 × 787,823.50
4. Step 4: Simplify right side
   361,768.50x = 620,665,867,152.25
5. Step 5: Solve for x
   x = 620,665,867,152.25/361,768.50
6. Step 6: Final answer
   x = 1,715,643.75