Finding the Third Proportional to 71,388 and 111,034.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,388 : 111,034.50 = 111,034.50 : x
2. Step 2: Convert to fraction form
   71,388/111,034.50 = 111,034.50/x
3. Step 3: Cross multiply
   71,388x = 111,034.50 × 111,034.50
4. Step 4: Simplify right side
   71,388x = 12,328,660,190.25
5. Step 5: Solve for x
   x = 12,328,660,190.25/71,388
6. Step 6: Final answer
   x = 172,699.34