Finding the Third Proportional to 54,405 and 79,744.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,405 : 79,744.50 = 79,744.50 : x
2. Step 2: Convert to fraction form
   54,405/79,744.50 = 79,744.50/x
3. Step 3: Cross multiply
   54,405x = 79,744.50 × 79,744.50
4. Step 4: Simplify right side
   54,405x = 6,359,185,280.25
5. Step 5: Solve for x
   x = 6,359,185,280.25/54,405
6. Step 6: Final answer
   x = 116,886.05