Finding the Third Proportional to 186,190 and 287,710

Step by Step Solution

1. Step 1: Write the proportion equation
   186,190 : 287,710 = 287,710 : x
2. Step 2: Convert to fraction form
   186,190/287,710 = 287,710/x
3. Step 3: Cross multiply
   186,190x = 287,710 × 287,710
4. Step 4: Simplify right side
   186,190x = 82,777,044,100
5. Step 5: Solve for x
   x = 82,777,044,100/186,190
6. Step 6: Final answer
   x = 444,583.73