Finding the Third Proportional to 72,003.75 and 111,013.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,003.75 : 111,013.50 = 111,013.50 : x
2. Step 2: Convert to fraction form
   72,003.75/111,013.50 = 111,013.50/x
3. Step 3: Cross multiply
   72,003.75x = 111,013.50 × 111,013.50
4. Step 4: Simplify right side
   72,003.75x = 12,323,997,182.25
5. Step 5: Solve for x
   x = 12,323,997,182.25/72,003.75
6. Step 6: Final answer
   x = 171,157.71