Finding the Third Proportional to 576,472 and 821,196

Step by Step Solution

1. Step 1: Write the proportion equation
   576,472 : 821,196 = 821,196 : x
2. Step 2: Convert to fraction form
   576,472/821,196 = 821,196/x
3. Step 3: Cross multiply
   576,472x = 821,196 × 821,196
4. Step 4: Simplify right side
   576,472x = 674,362,870,416
5. Step 5: Solve for x
   x = 674,362,870,416/576,472
6. Step 6: Final answer
   x = 1,169,810.28