Finding the Third Proportional to 492,036 and 803,456

Step by Step Solution

1. Step 1: Write the proportion equation
   492,036 : 803,456 = 803,456 : x
2. Step 2: Convert to fraction form
   492,036/803,456 = 803,456/x
3. Step 3: Cross multiply
   492,036x = 803,456 × 803,456
4. Step 4: Simplify right side
   492,036x = 645,541,543,936
5. Step 5: Solve for x
   x = 645,541,543,936/492,036
6. Step 6: Final answer
   x = 1,311,980.31