Finding the Third Proportional to 78,988 and 173,986

Step by Step Solution

1. Step 1: Write the proportion equation
   78,988 : 173,986 = 173,986 : x
2. Step 2: Convert to fraction form
   78,988/173,986 = 173,986/x
3. Step 3: Cross multiply
   78,988x = 173,986 × 173,986
4. Step 4: Simplify right side
   78,988x = 30,271,128,196
5. Step 5: Solve for x
   x = 30,271,128,196/78,988
6. Step 6: Final answer
   x = 383,237.05