Finding the Third Proportional to 20,800.50 and 43,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,800.50 : 43,300.50 = 43,300.50 : x
2. Step 2: Convert to fraction form
   20,800.50/43,300.50 = 43,300.50/x
3. Step 3: Cross multiply
   20,800.50x = 43,300.50 × 43,300.50
4. Step 4: Simplify right side
   20,800.50x = 1,874,933,300.25
5. Step 5: Solve for x
   x = 1,874,933,300.25/20,800.50
6. Step 6: Final answer
   x = 90,138.86