Finding the Third Proportional to 7,280 and 10,980.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,280 : 10,980.25 = 10,980.25 : x
2. Step 2: Convert to fraction form
   7,280/10,980.25 = 10,980.25/x
3. Step 3: Cross multiply
   7,280x = 10,980.25 × 10,980.25
4. Step 4: Simplify right side
   7,280x = 120,565,890.06
5. Step 5: Solve for x
   x = 120,565,890.06/7,280
6. Step 6: Final answer
   x = 16,561.25