Finding the Third Proportional to 20,704.50 and 42,928

Step by Step Solution

1. Step 1: Write the proportion equation
   20,704.50 : 42,928 = 42,928 : x
2. Step 2: Convert to fraction form
   20,704.50/42,928 = 42,928/x
3. Step 3: Cross multiply
   20,704.50x = 42,928 × 42,928
4. Step 4: Simplify right side
   20,704.50x = 1,842,813,184
5. Step 5: Solve for x
   x = 1,842,813,184/20,704.50
6. Step 6: Final answer
   x = 89,005.44