Finding the Third Proportional to 131,190 and 287,004

Step by Step Solution

1. Step 1: Write the proportion equation
   131,190 : 287,004 = 287,004 : x
2. Step 2: Convert to fraction form
   131,190/287,004 = 287,004/x
3. Step 3: Cross multiply
   131,190x = 287,004 × 287,004
4. Step 4: Simplify right side
   131,190x = 82,371,296,016
5. Step 5: Solve for x
   x = 82,371,296,016/131,190
6. Step 6: Final answer
   x = 627,877.86