Finding the Third Proportional to 118,240 and 173,900

Step by Step Solution

1. Step 1: Write the proportion equation
   118,240 : 173,900 = 173,900 : x
2. Step 2: Convert to fraction form
   118,240/173,900 = 173,900/x
3. Step 3: Cross multiply
   118,240x = 173,900 × 173,900
4. Step 4: Simplify right side
   118,240x = 30,241,210,000
5. Step 5: Solve for x
   x = 30,241,210,000/118,240
6. Step 6: Final answer
   x = 255,761.25