Finding the Third Proportional to 14,280.50 and 30,991

Step by Step Solution

1. Step 1: Write the proportion equation
   14,280.50 : 30,991 = 30,991 : x
2. Step 2: Convert to fraction form
   14,280.50/30,991 = 30,991/x
3. Step 3: Cross multiply
   14,280.50x = 30,991 × 30,991
4. Step 4: Simplify right side
   14,280.50x = 960,442,081
5. Step 5: Solve for x
   x = 960,442,081/14,280.50
6. Step 6: Final answer
   x = 67,255.49