Finding the Third Proportional to 105,639 and 154,731

Step by Step Solution

1. Step 1: Write the proportion equation
   105,639 : 154,731 = 154,731 : x
2. Step 2: Convert to fraction form
   105,639/154,731 = 154,731/x
3. Step 3: Cross multiply
   105,639x = 154,731 × 154,731
4. Step 4: Simplify right side
   105,639x = 23,941,682,361
5. Step 5: Solve for x
   x = 23,941,682,361/105,639
6. Step 6: Final answer
   x = 226,636.78