Finding the Third Proportional to 72,222.50 and 105,658.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,222.50 : 105,658.50 = 105,658.50 : x
2. Step 2: Convert to fraction form
   72,222.50/105,658.50 = 105,658.50/x
3. Step 3: Cross multiply
   72,222.50x = 105,658.50 × 105,658.50
4. Step 4: Simplify right side
   72,222.50x = 11,163,718,622.25
5. Step 5: Solve for x
   x = 11,163,718,622.25/72,222.50
6. Step 6: Final answer
   x = 154,573.97