Finding the Third Proportional to 300,510 and 661,284

Step by Step Solution

1. Step 1: Write the proportion equation
   300,510 : 661,284 = 661,284 : x
2. Step 2: Convert to fraction form
   300,510/661,284 = 661,284/x
3. Step 3: Cross multiply
   300,510x = 661,284 × 661,284
4. Step 4: Simplify right side
   300,510x = 437,296,528,656
5. Step 5: Solve for x
   x = 437,296,528,656/300,510
6. Step 6: Final answer
   x = 1,455,181.29