Finding the Third Proportional to 71,687.69 and 111,451.13

Step by Step Solution

1. Step 1: Write the proportion equation
   71,687.69 : 111,451.13 = 111,451.13 : x
2. Step 2: Convert to fraction form
   71,687.69/111,451.13 = 111,451.13/x
3. Step 3: Cross multiply
   71,687.69x = 111,451.13 × 111,451.13
4. Step 4: Simplify right side
   71,687.69x = 12,421,353,263.77
5. Step 5: Solve for x
   x = 12,421,353,263.77/71,687.69
6. Step 6: Final answer
   x = 173,270.39