Finding the Third Proportional to 8,548 and 21,470

Step by Step Solution

1. Step 1: Write the proportion equation
   8,548 : 21,470 = 21,470 : x
2. Step 2: Convert to fraction form
   8,548/21,470 = 21,470/x
3. Step 3: Cross multiply
   8,548x = 21,470 × 21,470
4. Step 4: Simplify right side
   8,548x = 460,960,900
5. Step 5: Solve for x
   x = 460,960,900/8,548
6. Step 6: Final answer
   x = 53,926.17