Finding the Third Proportional to 118,320 and 178,717.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,320 : 178,717.50 = 178,717.50 : x
2. Step 2: Convert to fraction form
   118,320/178,717.50 = 178,717.50/x
3. Step 3: Cross multiply
   118,320x = 178,717.50 × 178,717.50
4. Step 4: Simplify right side
   118,320x = 31,939,944,806.25
5. Step 5: Solve for x
   x = 31,939,944,806.25/118,320
6. Step 6: Final answer
   x = 269,945.44