Finding the Third Proportional to 300,187 and 422,200

Step by Step Solution

1. Step 1: Write the proportion equation
   300,187 : 422,200 = 422,200 : x
2. Step 2: Convert to fraction form
   300,187/422,200 = 422,200/x
3. Step 3: Cross multiply
   300,187x = 422,200 × 422,200
4. Step 4: Simplify right side
   300,187x = 178,252,840,000
5. Step 5: Solve for x
   x = 178,252,840,000/300,187
6. Step 6: Final answer
   x = 593,805.99