Finding the Third Proportional to 120,087.88 and 257,983

Step by Step Solution

1. Step 1: Write the proportion equation
   120,087.88 : 257,983 = 257,983 : x
2. Step 2: Convert to fraction form
   120,087.88/257,983 = 257,983/x
3. Step 3: Cross multiply
   120,087.88x = 257,983 × 257,983
4. Step 4: Simplify right side
   120,087.88x = 66,555,228,289
5. Step 5: Solve for x
   x = 66,555,228,289/120,087.88
6. Step 6: Final answer
   x = 554,221.05