Finding the Third Proportional to 300,411 and 609,111

Step by Step Solution

1. Step 1: Write the proportion equation
   300,411 : 609,111 = 609,111 : x
2. Step 2: Convert to fraction form
   300,411/609,111 = 609,111/x
3. Step 3: Cross multiply
   300,411x = 609,111 × 609,111
4. Step 4: Simplify right side
   300,411x = 371,016,210,321
5. Step 5: Solve for x
   x = 371,016,210,321/300,411
6. Step 6: Final answer
   x = 1,235,028.71