Finding the Third Proportional to 20,777.50 and 45,450

Step by Step Solution

1. Step 1: Write the proportion equation
   20,777.50 : 45,450 = 45,450 : x
2. Step 2: Convert to fraction form
   20,777.50/45,450 = 45,450/x
3. Step 3: Cross multiply
   20,777.50x = 45,450 × 45,450
4. Step 4: Simplify right side
   20,777.50x = 2,065,702,500
5. Step 5: Solve for x
   x = 2,065,702,500/20,777.50
6. Step 6: Final answer
   x = 99,420.17