Finding the Third Proportional to 101,980 and 143,355

Step by Step Solution

1. Step 1: Write the proportion equation
   101,980 : 143,355 = 143,355 : x
2. Step 2: Convert to fraction form
   101,980/143,355 = 143,355/x
3. Step 3: Cross multiply
   101,980x = 143,355 × 143,355
4. Step 4: Simplify right side
   101,980x = 20,550,656,025
5. Step 5: Solve for x
   x = 20,550,656,025/101,980
6. Step 6: Final answer
   x = 201,516.53