Finding the Third Proportional to 12,820 and 28,010

Step by Step Solution

1. Step 1: Write the proportion equation
   12,820 : 28,010 = 28,010 : x
2. Step 2: Convert to fraction form
   12,820/28,010 = 28,010/x
3. Step 3: Cross multiply
   12,820x = 28,010 × 28,010
4. Step 4: Simplify right side
   12,820x = 784,560,100
5. Step 5: Solve for x
   x = 784,560,100/12,820
6. Step 6: Final answer
   x = 61,198.14