Finding the Third Proportional to 5,212 and 10,604

Step by Step Solution

1. Step 1: Write the proportion equation
   5,212 : 10,604 = 10,604 : x
2. Step 2: Convert to fraction form
   5,212/10,604 = 10,604/x
3. Step 3: Cross multiply
   5,212x = 10,604 × 10,604
4. Step 4: Simplify right side
   5,212x = 112,444,816
5. Step 5: Solve for x
   x = 112,444,816/5,212
6. Step 6: Final answer
   x = 21,574.22