Finding the Third Proportional to 17,068 and 18,688

Step by Step Solution

1. Step 1: Write the proportion equation
   17,068 : 18,688 = 18,688 : x
2. Step 2: Convert to fraction form
   17,068/18,688 = 18,688/x
3. Step 3: Cross multiply
   17,068x = 18,688 × 18,688
4. Step 4: Simplify right side
   17,068x = 349,241,344
5. Step 5: Solve for x
   x = 349,241,344/17,068
6. Step 6: Final answer
   x = 20,461.76