Finding the Third Proportional to 300,462 and 609,221

Step by Step Solution

1. Step 1: Write the proportion equation
   300,462 : 609,221 = 609,221 : x
2. Step 2: Convert to fraction form
   300,462/609,221 = 609,221/x
3. Step 3: Cross multiply
   300,462x = 609,221 × 609,221
4. Step 4: Simplify right side
   300,462x = 371,150,226,841
5. Step 5: Solve for x
   x = 371,150,226,841/300,462
6. Step 6: Final answer
   x = 1,235,265.11