Finding the Third Proportional to 30,986 and 63,620

Step by Step Solution

1. Step 1: Write the proportion equation
   30,986 : 63,620 = 63,620 : x
2. Step 2: Convert to fraction form
   30,986/63,620 = 63,620/x
3. Step 3: Cross multiply
   30,986x = 63,620 × 63,620
4. Step 4: Simplify right side
   30,986x = 4,047,504,400
5. Step 5: Solve for x
   x = 4,047,504,400/30,986
6. Step 6: Final answer
   x = 130,623.65