Finding the Third Proportional to 81,990.56 and 179,168.63

Step by Step Solution

1. Step 1: Write the proportion equation
   81,990.56 : 179,168.63 = 179,168.63 : x
2. Step 2: Convert to fraction form
   81,990.56/179,168.63 = 179,168.63/x
3. Step 3: Cross multiply
   81,990.56x = 179,168.63 × 179,168.63
4. Step 4: Simplify right side
   81,990.56x = 32,101,396,184.39
5. Step 5: Solve for x
   x = 32,101,396,184.39/81,990.56
6. Step 6: Final answer
   x = 391,525.50