Finding the Third Proportional to 20,358 and 30,345

Step by Step Solution

1. Step 1: Write the proportion equation
   20,358 : 30,345 = 30,345 : x
2. Step 2: Convert to fraction form
   20,358/30,345 = 30,345/x
3. Step 3: Cross multiply
   20,358x = 30,345 × 30,345
4. Step 4: Simplify right side
   20,358x = 920,819,025
5. Step 5: Solve for x
   x = 920,819,025/20,358
6. Step 6: Final answer
   x = 45,231.31