Finding the Third Proportional to 31,328.50 and 67,851

Step by Step Solution

1. Step 1: Write the proportion equation
   31,328.50 : 67,851 = 67,851 : x
2. Step 2: Convert to fraction form
   31,328.50/67,851 = 67,851/x
3. Step 3: Cross multiply
   31,328.50x = 67,851 × 67,851
4. Step 4: Simplify right side
   31,328.50x = 4,603,758,201
5. Step 5: Solve for x
   x = 4,603,758,201/31,328.50
6. Step 6: Final answer
   x = 146,951.12