Finding the Third Proportional to 19,558.50 and 40,027.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,558.50 : 40,027.50 = 40,027.50 : x
2. Step 2: Convert to fraction form
   19,558.50/40,027.50 = 40,027.50/x
3. Step 3: Cross multiply
   19,558.50x = 40,027.50 × 40,027.50
4. Step 4: Simplify right side
   19,558.50x = 1,602,200,756.25
5. Step 5: Solve for x
   x = 1,602,200,756.25/19,558.50
6. Step 6: Final answer
   x = 81,918.39