Finding the Third Proportional to 20,506.50 and 42,957

Step by Step Solution

1. Step 1: Write the proportion equation
   20,506.50 : 42,957 = 42,957 : x
2. Step 2: Convert to fraction form
   20,506.50/42,957 = 42,957/x
3. Step 3: Cross multiply
   20,506.50x = 42,957 × 42,957
4. Step 4: Simplify right side
   20,506.50x = 1,845,303,849
5. Step 5: Solve for x
   x = 1,845,303,849/20,506.50
6. Step 6: Final answer
   x = 89,986.29