Finding the Third Proportional to 19,142.50 and 40,558

Step by Step Solution

1. Step 1: Write the proportion equation
   19,142.50 : 40,558 = 40,558 : x
2. Step 2: Convert to fraction form
   19,142.50/40,558 = 40,558/x
3. Step 3: Cross multiply
   19,142.50x = 40,558 × 40,558
4. Step 4: Simplify right side
   19,142.50x = 1,644,951,364
5. Step 5: Solve for x
   x = 1,644,951,364/19,142.50
6. Step 6: Final answer
   x = 85,931.90