Finding the Third Proportional to 396,171 and 863,077.50

Step by Step Solution

1. Step 1: Write the proportion equation
   396,171 : 863,077.50 = 863,077.50 : x
2. Step 2: Convert to fraction form
   396,171/863,077.50 = 863,077.50/x
3. Step 3: Cross multiply
   396,171x = 863,077.50 × 863,077.50
4. Step 4: Simplify right side
   396,171x = 744,902,771,006.25
5. Step 5: Solve for x
   x = 744,902,771,006.25/396,171
6. Step 6: Final answer
   x = 1,880,255.67