Finding the Third Proportional to 18,976 and 28,459.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,976 : 28,459.50 = 28,459.50 : x
2. Step 2: Convert to fraction form
   18,976/28,459.50 = 28,459.50/x
3. Step 3: Cross multiply
   18,976x = 28,459.50 × 28,459.50
4. Step 4: Simplify right side
   18,976x = 809,943,140.25
5. Step 5: Solve for x
   x = 809,943,140.25/18,976
6. Step 6: Final answer
   x = 42,682.50