Finding the Third Proportional to 13,939.50 and 30,469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,939.50 : 30,469.50 = 30,469.50 : x
2. Step 2: Convert to fraction form
   13,939.50/30,469.50 = 30,469.50/x
3. Step 3: Cross multiply
   13,939.50x = 30,469.50 × 30,469.50
4. Step 4: Simplify right side
   13,939.50x = 928,390,430.25
5. Step 5: Solve for x
   x = 928,390,430.25/13,939.50
6. Step 6: Final answer
   x = 66,601.42