Finding the Third Proportional to 20,460 and 30,688

Step by Step Solution

1. Step 1: Write the proportion equation
   20,460 : 30,688 = 30,688 : x
2. Step 2: Convert to fraction form
   20,460/30,688 = 30,688/x
3. Step 3: Cross multiply
   20,460x = 30,688 × 30,688
4. Step 4: Simplify right side
   20,460x = 941,753,344
5. Step 5: Solve for x
   x = 941,753,344/20,460
6. Step 6: Final answer
   x = 46,029.00