Finding the Third Proportional to 123,721.50 and 275,775

Step by Step Solution

1. Step 1: Write the proportion equation
   123,721.50 : 275,775 = 275,775 : x
2. Step 2: Convert to fraction form
   123,721.50/275,775 = 275,775/x
3. Step 3: Cross multiply
   123,721.50x = 275,775 × 275,775
4. Step 4: Simplify right side
   123,721.50x = 76,051,850,625
5. Step 5: Solve for x
   x = 76,051,850,625/123,721.50
6. Step 6: Final answer
   x = 614,701.98