Finding the Third Proportional to 30,830 and 63,116

Step by Step Solution

1. Step 1: Write the proportion equation
   30,830 : 63,116 = 63,116 : x
2. Step 2: Convert to fraction form
   30,830/63,116 = 63,116/x
3. Step 3: Cross multiply
   30,830x = 63,116 × 63,116
4. Step 4: Simplify right side
   30,830x = 3,983,629,456
5. Step 5: Solve for x
   x = 3,983,629,456/30,830
6. Step 6: Final answer
   x = 129,212.76