Finding the Third Proportional to 85,136 and 134,744

Step by Step Solution

1. Step 1: Write the proportion equation
   85,136 : 134,744 = 134,744 : x
2. Step 2: Convert to fraction form
   85,136/134,744 = 134,744/x
3. Step 3: Cross multiply
   85,136x = 134,744 × 134,744
4. Step 4: Simplify right side
   85,136x = 18,155,945,536
5. Step 5: Solve for x
   x = 18,155,945,536/85,136
6. Step 6: Final answer
   x = 213,258.15