Finding the Third Proportional to 574,453 and 804,990

Step by Step Solution

1. Step 1: Write the proportion equation
   574,453 : 804,990 = 804,990 : x
2. Step 2: Convert to fraction form
   574,453/804,990 = 804,990/x
3. Step 3: Cross multiply
   574,453x = 804,990 × 804,990
4. Step 4: Simplify right side
   574,453x = 648,008,900,100
5. Step 5: Solve for x
   x = 648,008,900,100/574,453
6. Step 6: Final answer
   x = 1,128,045.11