Finding the Third Proportional to 139,779 and 186,228

Step by Step Solution

1. Step 1: Write the proportion equation
   139,779 : 186,228 = 186,228 : x
2. Step 2: Convert to fraction form
   139,779/186,228 = 186,228/x
3. Step 3: Cross multiply
   139,779x = 186,228 × 186,228
4. Step 4: Simplify right side
   139,779x = 34,680,867,984
5. Step 5: Solve for x
   x = 34,680,867,984/139,779
6. Step 6: Final answer
   x = 248,112.15