Finding the Third Proportional to 73,170 and 99,380

Step by Step Solution

1. Step 1: Write the proportion equation
   73,170 : 99,380 = 99,380 : x
2. Step 2: Convert to fraction form
   73,170/99,380 = 99,380/x
3. Step 3: Cross multiply
   73,170x = 99,380 × 99,380
4. Step 4: Simplify right side
   73,170x = 9,876,384,400
5. Step 5: Solve for x
   x = 9,876,384,400/73,170
6. Step 6: Final answer
   x = 134,978.60