Finding the Third Proportional to 13,405.50 and 28,591.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,405.50 : 28,591.31 = 28,591.31 : x
2. Step 2: Convert to fraction form
   13,405.50/28,591.31 = 28,591.31/x
3. Step 3: Cross multiply
   13,405.50x = 28,591.31 × 28,591.31
4. Step 4: Simplify right side
   13,405.50x = 817,463,150.47
5. Step 5: Solve for x
   x = 817,463,150.47/13,405.50
6. Step 6: Final answer
   x = 60,979.68