Finding the Third Proportional to 300,638 and 626,152

Step by Step Solution

1. Step 1: Write the proportion equation
   300,638 : 626,152 = 626,152 : x
2. Step 2: Convert to fraction form
   300,638/626,152 = 626,152/x
3. Step 3: Cross multiply
   300,638x = 626,152 × 626,152
4. Step 4: Simplify right side
   300,638x = 392,066,327,104
5. Step 5: Solve for x
   x = 392,066,327,104/300,638
6. Step 6: Final answer
   x = 1,304,114.34