Finding the Third Proportional to 72,636 and 100,020

Step by Step Solution

1. Step 1: Write the proportion equation
   72,636 : 100,020 = 100,020 : x
2. Step 2: Convert to fraction form
   72,636/100,020 = 100,020/x
3. Step 3: Cross multiply
   72,636x = 100,020 × 100,020
4. Step 4: Simplify right side
   72,636x = 10,004,000,400
5. Step 5: Solve for x
   x = 10,004,000,400/72,636
6. Step 6: Final answer
   x = 137,727.85