Finding the Third Proportional to 200,766 and 445,818

Step by Step Solution

1. Step 1: Write the proportion equation
   200,766 : 445,818 = 445,818 : x
2. Step 2: Convert to fraction form
   200,766/445,818 = 445,818/x
3. Step 3: Cross multiply
   200,766x = 445,818 × 445,818
4. Step 4: Simplify right side
   200,766x = 198,753,689,124
5. Step 5: Solve for x
   x = 198,753,689,124/200,766
6. Step 6: Final answer
   x = 989,976.83