Finding the Third Proportional to 7,280 and 12,976

Step by Step Solution

1. Step 1: Write the proportion equation
   7,280 : 12,976 = 12,976 : x
2. Step 2: Convert to fraction form
   7,280/12,976 = 12,976/x
3. Step 3: Cross multiply
   7,280x = 12,976 × 12,976
4. Step 4: Simplify right side
   7,280x = 168,376,576
5. Step 5: Solve for x
   x = 168,376,576/7,280
6. Step 6: Final answer
   x = 23,128.65