Finding the Third Proportional to 28,621.50 and 43,786.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,621.50 : 43,786.50 = 43,786.50 : x
2. Step 2: Convert to fraction form
   28,621.50/43,786.50 = 43,786.50/x
3. Step 3: Cross multiply
   28,621.50x = 43,786.50 × 43,786.50
4. Step 4: Simplify right side
   28,621.50x = 1,917,257,582.25
5. Step 5: Solve for x
   x = 1,917,257,582.25/28,621.50
6. Step 6: Final answer
   x = 66,986.62