Finding the Third Proportional to 394,812 and 562,690.50

Step by Step Solution

1. Step 1: Write the proportion equation
   394,812 : 562,690.50 = 562,690.50 : x
2. Step 2: Convert to fraction form
   394,812/562,690.50 = 562,690.50/x
3. Step 3: Cross multiply
   394,812x = 562,690.50 × 562,690.50
4. Step 4: Simplify right side
   394,812x = 316,620,598,790.25
5. Step 5: Solve for x
   x = 316,620,598,790.25/394,812
6. Step 6: Final answer
   x = 801,952.83