Finding the Third Proportional to 72,037.50 and 105,721.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,037.50 : 105,721.50 = 105,721.50 : x
2. Step 2: Convert to fraction form
   72,037.50/105,721.50 = 105,721.50/x
3. Step 3: Cross multiply
   72,037.50x = 105,721.50 × 105,721.50
4. Step 4: Simplify right side
   72,037.50x = 11,177,035,562.25
5. Step 5: Solve for x
   x = 11,177,035,562.25/72,037.50
6. Step 6: Final answer
   x = 155,155.79