Finding the Third Proportional to 7,072.50 and 12,403.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,072.50 : 12,403.50 = 12,403.50 : x
2. Step 2: Convert to fraction form
   7,072.50/12,403.50 = 12,403.50/x
3. Step 3: Cross multiply
   7,072.50x = 12,403.50 × 12,403.50
4. Step 4: Simplify right side
   7,072.50x = 153,846,812.25
5. Step 5: Solve for x
   x = 153,846,812.25/7,072.50
6. Step 6: Final answer
   x = 21,752.82