Finding the Third Proportional to 20,399 and 30,410

Step by Step Solution

1. Step 1: Write the proportion equation
   20,399 : 30,410 = 30,410 : x
2. Step 2: Convert to fraction form
   20,399/30,410 = 30,410/x
3. Step 3: Cross multiply
   20,399x = 30,410 × 30,410
4. Step 4: Simplify right side
   20,399x = 924,768,100
5. Step 5: Solve for x
   x = 924,768,100/20,399
6. Step 6: Final answer
   x = 45,333.99