Finding the Third Proportional to 300,984 and 626,880

Step by Step Solution

1. Step 1: Write the proportion equation
   300,984 : 626,880 = 626,880 : x
2. Step 2: Convert to fraction form
   300,984/626,880 = 626,880/x
3. Step 3: Cross multiply
   300,984x = 626,880 × 626,880
4. Step 4: Simplify right side
   300,984x = 392,978,534,400
5. Step 5: Solve for x
   x = 392,978,534,400/300,984
6. Step 6: Final answer
   x = 1,305,645.93