Finding the Third Proportional to 71,910.75 and 111,448.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,910.75 : 111,448.50 = 111,448.50 : x
2. Step 2: Convert to fraction form
   71,910.75/111,448.50 = 111,448.50/x
3. Step 3: Cross multiply
   71,910.75x = 111,448.50 × 111,448.50
4. Step 4: Simplify right side
   71,910.75x = 12,420,768,152.25
5. Step 5: Solve for x
   x = 12,420,768,152.25/71,910.75
6. Step 6: Final answer
   x = 172,724.78