Finding the Third Proportional to 13,579.88 and 28,399.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,579.88 : 28,399.88 = 28,399.88 : x
2. Step 2: Convert to fraction form
   13,579.88/28,399.88 = 28,399.88/x
3. Step 3: Cross multiply
   13,579.88x = 28,399.88 × 28,399.88
4. Step 4: Simplify right side
   13,579.88x = 806,552,900.02
5. Step 5: Solve for x
   x = 806,552,900.02/13,579.88
6. Step 6: Final answer
   x = 59,393.25