Finding the Third Proportional to 71,691 and 111,455.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,691 : 111,455.50 = 111,455.50 : x
2. Step 2: Convert to fraction form
   71,691/111,455.50 = 111,455.50/x
3. Step 3: Cross multiply
   71,691x = 111,455.50 × 111,455.50
4. Step 4: Simplify right side
   71,691x = 12,422,328,480.25
5. Step 5: Solve for x
   x = 12,422,328,480.25/71,691
6. Step 6: Final answer
   x = 173,275.98