Finding the Third Proportional to 518,382.56 and 811,404.56

Step by Step Solution

1. Step 1: Write the proportion equation
   518,382.56 : 811,404.56 = 811,404.56 : x
2. Step 2: Convert to fraction form
   518,382.56/811,404.56 = 811,404.56/x
3. Step 3: Cross multiply
   518,382.56x = 811,404.56 × 811,404.56
4. Step 4: Simplify right side
   518,382.56x = 658,377,364,045.82
5. Step 5: Solve for x
   x = 658,377,364,045.82/518,382.56
6. Step 6: Final answer
   x = 1,270,060.78