Finding the Third Proportional to 118,440 and 173,988

Step by Step Solution

1. Step 1: Write the proportion equation
   118,440 : 173,988 = 173,988 : x
2. Step 2: Convert to fraction form
   118,440/173,988 = 173,988/x
3. Step 3: Cross multiply
   118,440x = 173,988 × 173,988
4. Step 4: Simplify right side
   118,440x = 30,271,824,144
5. Step 5: Solve for x
   x = 30,271,824,144/118,440
6. Step 6: Final answer
   x = 255,587.84