Finding the Third Proportional to 72,636 and 98,578

Step by Step Solution

1. Step 1: Write the proportion equation
   72,636 : 98,578 = 98,578 : x
2. Step 2: Convert to fraction form
   72,636/98,578 = 98,578/x
3. Step 3: Cross multiply
   72,636x = 98,578 × 98,578
4. Step 4: Simplify right side
   72,636x = 9,717,622,084
5. Step 5: Solve for x
   x = 9,717,622,084/72,636
6. Step 6: Final answer
   x = 133,785.20