Finding the Third Proportional to 20,148.75 and 30,111.75

Step by Step Solution

1. Step 1: Write the proportion equation
   20,148.75 : 30,111.75 = 30,111.75 : x
2. Step 2: Convert to fraction form
   20,148.75/30,111.75 = 30,111.75/x
3. Step 3: Cross multiply
   20,148.75x = 30,111.75 × 30,111.75
4. Step 4: Simplify right side
   20,148.75x = 906,717,488.06
5. Step 5: Solve for x
   x = 906,717,488.06/20,148.75
6. Step 6: Final answer
   x = 45,001.18