Finding the Third Proportional to 20,878 and 45,040

Step by Step Solution

1. Step 1: Write the proportion equation
   20,878 : 45,040 = 45,040 : x
2. Step 2: Convert to fraction form
   20,878/45,040 = 45,040/x
3. Step 3: Cross multiply
   20,878x = 45,040 × 45,040
4. Step 4: Simplify right side
   20,878x = 2,028,601,600
5. Step 5: Solve for x
   x = 2,028,601,600/20,878
6. Step 6: Final answer
   x = 97,164.56