Finding the Third Proportional to 31,245 and 67,480.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,245 : 67,480.50 = 67,480.50 : x
2. Step 2: Convert to fraction form
   31,245/67,480.50 = 67,480.50/x
3. Step 3: Cross multiply
   31,245x = 67,480.50 × 67,480.50
4. Step 4: Simplify right side
   31,245x = 4,553,617,880.25
5. Step 5: Solve for x
   x = 4,553,617,880.25/31,245
6. Step 6: Final answer
   x = 145,739.09