Finding the Third Proportional to 20,310 and 42,843

Step by Step Solution

1. Step 1: Write the proportion equation
   20,310 : 42,843 = 42,843 : x
2. Step 2: Convert to fraction form
   20,310/42,843 = 42,843/x
3. Step 3: Cross multiply
   20,310x = 42,843 × 42,843
4. Step 4: Simplify right side
   20,310x = 1,835,522,649
5. Step 5: Solve for x
   x = 1,835,522,649/20,310
6. Step 6: Final answer
   x = 90,375.32