Finding the Third Proportional to 20,778.19 and 45,361.69

Step by Step Solution

1. Step 1: Write the proportion equation
   20,778.19 : 45,361.69 = 45,361.69 : x
2. Step 2: Convert to fraction form
   20,778.19/45,361.69 = 45,361.69/x
3. Step 3: Cross multiply
   20,778.19x = 45,361.69 × 45,361.69
4. Step 4: Simplify right side
   20,778.19x = 2,057,682,692.85
5. Step 5: Solve for x
   x = 2,057,682,692.85/20,778.19
6. Step 6: Final answer
   x = 99,030.90