Finding the Third Proportional to 115,857 and 253,857.38

Step by Step Solution

1. Step 1: Write the proportion equation
   115,857 : 253,857.38 = 253,857.38 : x
2. Step 2: Convert to fraction form
   115,857/253,857.38 = 253,857.38/x
3. Step 3: Cross multiply
   115,857x = 253,857.38 × 253,857.38
4. Step 4: Simplify right side
   115,857x = 64,443,566,841.89
5. Step 5: Solve for x
   x = 64,443,566,841.89/115,857
6. Step 6: Final answer
   x = 556,233.69