Finding the Third Proportional to 397,182 and 851,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   397,182 : 851,221.50 = 851,221.50 : x
2. Step 2: Convert to fraction form
   397,182/851,221.50 = 851,221.50/x
3. Step 3: Cross multiply
   397,182x = 851,221.50 × 851,221.50
4. Step 4: Simplify right side
   397,182x = 724,578,042,062.25
5. Step 5: Solve for x
   x = 724,578,042,062.25/397,182
6. Step 6: Final answer
   x = 1,824,297.28