Finding the Third Proportional to 67,111 and 144,731

Step by Step Solution

1. Step 1: Write the proportion equation
   67,111 : 144,731 = 144,731 : x
2. Step 2: Convert to fraction form
   67,111/144,731 = 144,731/x
3. Step 3: Cross multiply
   67,111x = 144,731 × 144,731
4. Step 4: Simplify right side
   67,111x = 20,947,062,361
5. Step 5: Solve for x
   x = 20,947,062,361/67,111
6. Step 6: Final answer
   x = 312,125.62