Finding the Third Proportional to 18,631.69 and 40,609.69

Step by Step Solution

1. Step 1: Write the proportion equation
   18,631.69 : 40,609.69 = 40,609.69 : x
2. Step 2: Convert to fraction form
   18,631.69/40,609.69 = 40,609.69/x
3. Step 3: Cross multiply
   18,631.69x = 40,609.69 × 40,609.69
4. Step 4: Simplify right side
   18,631.69x = 1,649,146,718.85
5. Step 5: Solve for x
   x = 1,649,146,718.85/18,631.69
6. Step 6: Final answer
   x = 88,513.01