Finding the Third Proportional to 20,212.50 and 42,519.38

Step by Step Solution

1. Step 1: Write the proportion equation
   20,212.50 : 42,519.38 = 42,519.38 : x
2. Step 2: Convert to fraction form
   20,212.50/42,519.38 = 42,519.38/x
3. Step 3: Cross multiply
   20,212.50x = 42,519.38 × 42,519.38
4. Step 4: Simplify right side
   20,212.50x = 1,807,897,250.39
5. Step 5: Solve for x
   x = 1,807,897,250.39/20,212.50
6. Step 6: Final answer
   x = 89,444.51