Finding the Third Proportional to 300,716 and 423,100

Step by Step Solution

1. Step 1: Write the proportion equation
   300,716 : 423,100 = 423,100 : x
2. Step 2: Convert to fraction form
   300,716/423,100 = 423,100/x
3. Step 3: Cross multiply
   300,716x = 423,100 × 423,100
4. Step 4: Simplify right side
   300,716x = 179,013,610,000
5. Step 5: Solve for x
   x = 179,013,610,000/300,716
6. Step 6: Final answer
   x = 595,291.27