Finding the Third Proportional to 7,218 and 10,550

Step by Step Solution

1. Step 1: Write the proportion equation
   7,218 : 10,550 = 10,550 : x
2. Step 2: Convert to fraction form
   7,218/10,550 = 10,550/x
3. Step 3: Cross multiply
   7,218x = 10,550 × 10,550
4. Step 4: Simplify right side
   7,218x = 111,302,500
5. Step 5: Solve for x
   x = 111,302,500/7,218
6. Step 6: Final answer
   x = 15,420.13