Finding the Third Proportional to 395,662.50 and 851,269.50

Step by Step Solution

1. Step 1: Write the proportion equation
   395,662.50 : 851,269.50 = 851,269.50 : x
2. Step 2: Convert to fraction form
   395,662.50/851,269.50 = 851,269.50/x
3. Step 3: Cross multiply
   395,662.50x = 851,269.50 × 851,269.50
4. Step 4: Simplify right side
   395,662.50x = 724,659,761,630.25
5. Step 5: Solve for x
   x = 724,659,761,630.25/395,662.50
6. Step 6: Final answer
   x = 1,831,509.84