Finding the Third Proportional to 20,187.42 and 30,987.42

Step by Step Solution

1. Step 1: Write the proportion equation
   20,187.42 : 30,987.42 = 30,987.42 : x
2. Step 2: Convert to fraction form
   20,187.42/30,987.42 = 30,987.42/x
3. Step 3: Cross multiply
   20,187.42x = 30,987.42 × 30,987.42
4. Step 4: Simplify right side
   20,187.42x = 960,220,314.46
5. Step 5: Solve for x
   x = 960,220,314.46/20,187.42
6. Step 6: Final answer
   x = 47,565.28