Finding the Third Proportional to 231,828 and 488,978

Step by Step Solution

1. Step 1: Write the proportion equation
   231,828 : 488,978 = 488,978 : x
2. Step 2: Convert to fraction form
   231,828/488,978 = 488,978/x
3. Step 3: Cross multiply
   231,828x = 488,978 × 488,978
4. Step 4: Simplify right side
   231,828x = 239,099,484,484
5. Step 5: Solve for x
   x = 239,099,484,484/231,828
6. Step 6: Final answer
   x = 1,031,365.86