Finding the Third Proportional to 300,807 and 626,400

Step by Step Solution

1. Step 1: Write the proportion equation
   300,807 : 626,400 = 626,400 : x
2. Step 2: Convert to fraction form
   300,807/626,400 = 626,400/x
3. Step 3: Cross multiply
   300,807x = 626,400 × 626,400
4. Step 4: Simplify right side
   300,807x = 392,376,960,000
5. Step 5: Solve for x
   x = 392,376,960,000/300,807
6. Step 6: Final answer
   x = 1,304,414.33