Finding the Third Proportional to 127,436 and 178,240

Step by Step Solution

1. Step 1: Write the proportion equation
   127,436 : 178,240 = 178,240 : x
2. Step 2: Convert to fraction form
   127,436/178,240 = 178,240/x
3. Step 3: Cross multiply
   127,436x = 178,240 × 178,240
4. Step 4: Simplify right side
   127,436x = 31,769,497,600
5. Step 5: Solve for x
   x = 31,769,497,600/127,436
6. Step 6: Final answer
   x = 249,297.67