Finding the Third Proportional to 72,718.50 and 111,735

Step by Step Solution

1. Step 1: Write the proportion equation
   72,718.50 : 111,735 = 111,735 : x
2. Step 2: Convert to fraction form
   72,718.50/111,735 = 111,735/x
3. Step 3: Cross multiply
   72,718.50x = 111,735 × 111,735
4. Step 4: Simplify right side
   72,718.50x = 12,484,710,225
5. Step 5: Solve for x
   x = 12,484,710,225/72,718.50
6. Step 6: Final answer
   x = 171,685.48