Finding the Third Proportional to 190,504 and 287,484

Step by Step Solution

1. Step 1: Write the proportion equation
   190,504 : 287,484 = 287,484 : x
2. Step 2: Convert to fraction form
   190,504/287,484 = 287,484/x
3. Step 3: Cross multiply
   190,504x = 287,484 × 287,484
4. Step 4: Simplify right side
   190,504x = 82,647,050,256
5. Step 5: Solve for x
   x = 82,647,050,256/190,504
6. Step 6: Final answer
   x = 433,833.67