Finding the Third Proportional to 72,905 and 105,361

Step by Step Solution

1. Step 1: Write the proportion equation
   72,905 : 105,361 = 105,361 : x
2. Step 2: Convert to fraction form
   72,905/105,361 = 105,361/x
3. Step 3: Cross multiply
   72,905x = 105,361 × 105,361
4. Step 4: Simplify right side
   72,905x = 11,100,940,321
5. Step 5: Solve for x
   x = 11,100,940,321/72,905
6. Step 6: Final answer
   x = 152,265.83