Finding the Third Proportional to 396,033.50 and 813,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   396,033.50 : 813,061.50 = 813,061.50 : x
2. Step 2: Convert to fraction form
   396,033.50/813,061.50 = 813,061.50/x
3. Step 3: Cross multiply
   396,033.50x = 813,061.50 × 813,061.50
4. Step 4: Simplify right side
   396,033.50x = 661,069,002,782.25
5. Step 5: Solve for x
   x = 661,069,002,782.25/396,033.50
6. Step 6: Final answer
   x = 1,669,224.96