Finding the Third Proportional to 458,804 and 674,818

Step by Step Solution

1. Step 1: Write the proportion equation
   458,804 : 674,818 = 674,818 : x
2. Step 2: Convert to fraction form
   458,804/674,818 = 674,818/x
3. Step 3: Cross multiply
   458,804x = 674,818 × 674,818
4. Step 4: Simplify right side
   458,804x = 455,379,333,124
5. Step 5: Solve for x
   x = 455,379,333,124/458,804
6. Step 6: Final answer
   x = 992,535.66