Finding the Third Proportional to 30,712.50 and 67,196.25

Step by Step Solution

1. Step 1: Write the proportion equation
   30,712.50 : 67,196.25 = 67,196.25 : x
2. Step 2: Convert to fraction form
   30,712.50/67,196.25 = 67,196.25/x
3. Step 3: Cross multiply
   30,712.50x = 67,196.25 × 67,196.25
4. Step 4: Simplify right side
   30,712.50x = 4,515,336,014.06
5. Step 5: Solve for x
   x = 4,515,336,014.06/30,712.50
6. Step 6: Final answer
   x = 147,019.49