Finding the Third Proportional to 155,870 and 251,017

Step by Step Solution

1. Step 1: Write the proportion equation
   155,870 : 251,017 = 251,017 : x
2. Step 2: Convert to fraction form
   155,870/251,017 = 251,017/x
3. Step 3: Cross multiply
   155,870x = 251,017 × 251,017
4. Step 4: Simplify right side
   155,870x = 63,009,534,289
5. Step 5: Solve for x
   x = 63,009,534,289/155,870
6. Step 6: Final answer
   x = 404,244.14