Finding the Third Proportional to 84,020 and 133,105

Step by Step Solution

1. Step 1: Write the proportion equation
   84,020 : 133,105 = 133,105 : x
2. Step 2: Convert to fraction form
   84,020/133,105 = 133,105/x
3. Step 3: Cross multiply
   84,020x = 133,105 × 133,105
4. Step 4: Simplify right side
   84,020x = 17,716,941,025
5. Step 5: Solve for x
   x = 17,716,941,025/84,020
6. Step 6: Final answer
   x = 210,865.76