Finding the Third Proportional to 576,144 and 872,176.50

Step by Step Solution

1. Step 1: Write the proportion equation
   576,144 : 872,176.50 = 872,176.50 : x
2. Step 2: Convert to fraction form
   576,144/872,176.50 = 872,176.50/x
3. Step 3: Cross multiply
   576,144x = 872,176.50 × 872,176.50
4. Step 4: Simplify right side
   576,144x = 760,691,847,152.25
5. Step 5: Solve for x
   x = 760,691,847,152.25/576,144
6. Step 6: Final answer
   x = 1,320,315.49