Finding the Third Proportional to 30,622 and 63,172

Step by Step Solution

1. Step 1: Write the proportion equation
   30,622 : 63,172 = 63,172 : x
2. Step 2: Convert to fraction form
   30,622/63,172 = 63,172/x
3. Step 3: Cross multiply
   30,622x = 63,172 × 63,172
4. Step 4: Simplify right side
   30,622x = 3,990,701,584
5. Step 5: Solve for x
   x = 3,990,701,584/30,622
6. Step 6: Final answer
   x = 130,321.39