Finding the Third Proportional to 18,217 and 42,986.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,217 : 42,986.50 = 42,986.50 : x
2. Step 2: Convert to fraction form
   18,217/42,986.50 = 42,986.50/x
3. Step 3: Cross multiply
   18,217x = 42,986.50 × 42,986.50
4. Step 4: Simplify right side
   18,217x = 1,847,839,182.25
5. Step 5: Solve for x
   x = 1,847,839,182.25/18,217
6. Step 6: Final answer
   x = 101,434.88