Finding the Third Proportional to 296,916 and 622,986

Step by Step Solution

1. Step 1: Write the proportion equation
   296,916 : 622,986 = 622,986 : x
2. Step 2: Convert to fraction form
   296,916/622,986 = 622,986/x
3. Step 3: Cross multiply
   296,916x = 622,986 × 622,986
4. Step 4: Simplify right side
   296,916x = 388,111,556,196
5. Step 5: Solve for x
   x = 388,111,556,196/296,916
6. Step 6: Final answer
   x = 1,307,142.61