Finding the Third Proportional to 576,181 and 872,221.50

Step by Step Solution

1. Step 1: Write the proportion equation
   576,181 : 872,221.50 = 872,221.50 : x
2. Step 2: Convert to fraction form
   576,181/872,221.50 = 872,221.50/x
3. Step 3: Cross multiply
   576,181x = 872,221.50 × 872,221.50
4. Step 4: Simplify right side
   576,181x = 760,770,345,062.25
5. Step 5: Solve for x
   x = 760,770,345,062.25/576,181
6. Step 6: Final answer
   x = 1,320,366.94