Finding the Third Proportional to 115,857.75 and 253,860

Step by Step Solution

1. Step 1: Write the proportion equation
   115,857.75 : 253,860 = 253,860 : x
2. Step 2: Convert to fraction form
   115,857.75/253,860 = 253,860/x
3. Step 3: Cross multiply
   115,857.75x = 253,860 × 253,860
4. Step 4: Simplify right side
   115,857.75x = 64,444,899,600
5. Step 5: Solve for x
   x = 64,444,899,600/115,857.75
6. Step 6: Final answer
   x = 556,241.59