Finding the Third Proportional to 18,759 and 39,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,759 : 39,628.50 = 39,628.50 : x
2. Step 2: Convert to fraction form
   18,759/39,628.50 = 39,628.50/x
3. Step 3: Cross multiply
   18,759x = 39,628.50 × 39,628.50
4. Step 4: Simplify right side
   18,759x = 1,570,418,012.25
5. Step 5: Solve for x
   x = 1,570,418,012.25/18,759
6. Step 6: Final answer
   x = 83,715.44