Finding the Third Proportional to 19,072.50 and 39,888.75

Step by Step Solution

1. Step 1: Write the proportion equation
   19,072.50 : 39,888.75 = 39,888.75 : x
2. Step 2: Convert to fraction form
   19,072.50/39,888.75 = 39,888.75/x
3. Step 3: Cross multiply
   19,072.50x = 39,888.75 × 39,888.75
4. Step 4: Simplify right side
   19,072.50x = 1,591,112,376.56
5. Step 5: Solve for x
   x = 1,591,112,376.56/19,072.50
6. Step 6: Final answer
   x = 83,424.43