Finding the Third Proportional to 311,904 and 661,014

Step by Step Solution

1. Step 1: Write the proportion equation
   311,904 : 661,014 = 661,014 : x
2. Step 2: Convert to fraction form
   311,904/661,014 = 661,014/x
3. Step 3: Cross multiply
   311,904x = 661,014 × 661,014
4. Step 4: Simplify right side
   311,904x = 436,939,508,196
5. Step 5: Solve for x
   x = 436,939,508,196/311,904
6. Step 6: Final answer
   x = 1,400,878.18