Finding the Third Proportional to 80,400 and 118,191

Step by Step Solution

1. Step 1: Write the proportion equation
   80,400 : 118,191 = 118,191 : x
2. Step 2: Convert to fraction form
   80,400/118,191 = 118,191/x
3. Step 3: Cross multiply
   80,400x = 118,191 × 118,191
4. Step 4: Simplify right side
   80,400x = 13,969,112,481
5. Step 5: Solve for x
   x = 13,969,112,481/80,400
6. Step 6: Final answer
   x = 173,745.18