Finding the Third Proportional to 72,192 and 111,107.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,192 : 111,107.50 = 111,107.50 : x
2. Step 2: Convert to fraction form
   72,192/111,107.50 = 111,107.50/x
3. Step 3: Cross multiply
   72,192x = 111,107.50 × 111,107.50
4. Step 4: Simplify right side
   72,192x = 12,344,876,556.25
5. Step 5: Solve for x
   x = 12,344,876,556.25/72,192
6. Step 6: Final answer
   x = 171,000.62