Finding the Third Proportional to 28,339.50 and 39,619.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,339.50 : 39,619.50 = 39,619.50 : x
2. Step 2: Convert to fraction form
   28,339.50/39,619.50 = 39,619.50/x
3. Step 3: Cross multiply
   28,339.50x = 39,619.50 × 39,619.50
4. Step 4: Simplify right side
   28,339.50x = 1,569,704,780.25
5. Step 5: Solve for x
   x = 1,569,704,780.25/28,339.50
6. Step 6: Final answer
   x = 55,389.29