Finding the Third Proportional to 18,209.81 and 40,059.56

Step by Step Solution

1. Step 1: Write the proportion equation
   18,209.81 : 40,059.56 = 40,059.56 : x
2. Step 2: Convert to fraction form
   18,209.81/40,059.56 = 40,059.56/x
3. Step 3: Cross multiply
   18,209.81x = 40,059.56 × 40,059.56
4. Step 4: Simplify right side
   18,209.81x = 1,604,768,547.69
5. Step 5: Solve for x
   x = 1,604,768,547.69/18,209.81
6. Step 6: Final answer
   x = 88,126.58