Finding the Third Proportional to 118,242 and 178,590.38

Step by Step Solution

1. Step 1: Write the proportion equation
   118,242 : 178,590.38 = 178,590.38 : x
2. Step 2: Convert to fraction form
   118,242/178,590.38 = 178,590.38/x
3. Step 3: Cross multiply
   118,242x = 178,590.38 × 178,590.38
4. Step 4: Simplify right side
   118,242x = 31,894,522,042.64
5. Step 5: Solve for x
   x = 31,894,522,042.64/118,242
6. Step 6: Final answer
   x = 269,739.37