Finding the Third Proportional to 20,979.50 and 45,611.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,979.50 : 45,611.50 = 45,611.50 : x
2. Step 2: Convert to fraction form
   20,979.50/45,611.50 = 45,611.50/x
3. Step 3: Cross multiply
   20,979.50x = 45,611.50 × 45,611.50
4. Step 4: Simplify right side
   20,979.50x = 2,080,408,932.25
5. Step 5: Solve for x
   x = 2,080,408,932.25/20,979.50
6. Step 6: Final answer
   x = 99,163.89