Finding the Third Proportional to 30,636 and 63,240

Step by Step Solution

1. Step 1: Write the proportion equation
   30,636 : 63,240 = 63,240 : x
2. Step 2: Convert to fraction form
   30,636/63,240 = 63,240/x
3. Step 3: Cross multiply
   30,636x = 63,240 × 63,240
4. Step 4: Simplify right side
   30,636x = 3,999,297,600
5. Step 5: Solve for x
   x = 3,999,297,600/30,636
6. Step 6: Final answer
   x = 130,542.42