Finding the Third Proportional to 231,488 and 501,408

Step by Step Solution

1. Step 1: Write the proportion equation
   231,488 : 501,408 = 501,408 : x
2. Step 2: Convert to fraction form
   231,488/501,408 = 501,408/x
3. Step 3: Cross multiply
   231,488x = 501,408 × 501,408
4. Step 4: Simplify right side
   231,488x = 251,409,982,464
5. Step 5: Solve for x
   x = 251,409,982,464/231,488
6. Step 6: Final answer
   x = 1,086,060.54