Finding the Third Proportional to 298,116 and 446,040

Step by Step Solution

1. Step 1: Write the proportion equation
   298,116 : 446,040 = 446,040 : x
2. Step 2: Convert to fraction form
   298,116/446,040 = 446,040/x
3. Step 3: Cross multiply
   298,116x = 446,040 × 446,040
4. Step 4: Simplify right side
   298,116x = 198,951,681,600
5. Step 5: Solve for x
   x = 198,951,681,600/298,116
6. Step 6: Final answer
   x = 667,363.31