Finding the Third Proportional to 89,986 and 134,479

Step by Step Solution

1. Step 1: Write the proportion equation
   89,986 : 134,479 = 134,479 : x
2. Step 2: Convert to fraction form
   89,986/134,479 = 134,479/x
3. Step 3: Cross multiply
   89,986x = 134,479 × 134,479
4. Step 4: Simplify right side
   89,986x = 18,084,601,441
5. Step 5: Solve for x
   x = 18,084,601,441/89,986
6. Step 6: Final answer
   x = 200,971.28