Finding the Third Proportional to 116,139 and 251,286

Step by Step Solution

1. Step 1: Write the proportion equation
   116,139 : 251,286 = 251,286 : x
2. Step 2: Convert to fraction form
   116,139/251,286 = 251,286/x
3. Step 3: Cross multiply
   116,139x = 251,286 × 251,286
4. Step 4: Simplify right side
   116,139x = 63,144,653,796
5. Step 5: Solve for x
   x = 63,144,653,796/116,139
6. Step 6: Final answer
   x = 543,698.96