Finding the Third Proportional to 120,300.75 and 259,857

Step by Step Solution

1. Step 1: Write the proportion equation
   120,300.75 : 259,857 = 259,857 : x
2. Step 2: Convert to fraction form
   120,300.75/259,857 = 259,857/x
3. Step 3: Cross multiply
   120,300.75x = 259,857 × 259,857
4. Step 4: Simplify right side
   120,300.75x = 67,525,660,449
5. Step 5: Solve for x
   x = 67,525,660,449/120,300.75
6. Step 6: Final answer
   x = 561,307.06