Finding the Third Proportional to 23,145.75 and 31,290.05

Step by Step Solution

1. Step 1: Write the proportion equation
   23,145.75 : 31,290.05 = 31,290.05 : x
2. Step 2: Convert to fraction form
   23,145.75/31,290.05 = 31,290.05/x
3. Step 3: Cross multiply
   23,145.75x = 31,290.05 × 31,290.05
4. Step 4: Simplify right side
   23,145.75x = 979,067,033.44
5. Step 5: Solve for x
   x = 979,067,033.44/23,145.75
6. Step 6: Final answer
   x = 42,300.08