Finding the Third Proportional to 30,688 and 63,104

Step by Step Solution

1. Step 1: Write the proportion equation
   30,688 : 63,104 = 63,104 : x
2. Step 2: Convert to fraction form
   30,688/63,104 = 63,104/x
3. Step 3: Cross multiply
   30,688x = 63,104 × 63,104
4. Step 4: Simplify right side
   30,688x = 3,982,114,816
5. Step 5: Solve for x
   x = 3,982,114,816/30,688
6. Step 6: Final answer
   x = 129,761.30