Finding the Third Proportional to 292,908 and 444,978

Step by Step Solution

1. Step 1: Write the proportion equation
   292,908 : 444,978 = 444,978 : x
2. Step 2: Convert to fraction form
   292,908/444,978 = 444,978/x
3. Step 3: Cross multiply
   292,908x = 444,978 × 444,978
4. Step 4: Simplify right side
   292,908x = 198,005,420,484
5. Step 5: Solve for x
   x = 198,005,420,484/292,908
6. Step 6: Final answer
   x = 675,998.68