Finding the Third Proportional to 300,984 and 626,878

Step by Step Solution

1. Step 1: Write the proportion equation
   300,984 : 626,878 = 626,878 : x
2. Step 2: Convert to fraction form
   300,984/626,878 = 626,878/x
3. Step 3: Cross multiply
   300,984x = 626,878 × 626,878
4. Step 4: Simplify right side
   300,984x = 392,976,026,884
5. Step 5: Solve for x
   x = 392,976,026,884/300,984
6. Step 6: Final answer
   x = 1,305,637.60