Finding the Third Proportional to 87,510 and 187,412

Step by Step Solution

1. Step 1: Write the proportion equation
   87,510 : 187,412 = 187,412 : x
2. Step 2: Convert to fraction form
   87,510/187,412 = 187,412/x
3. Step 3: Cross multiply
   87,510x = 187,412 × 187,412
4. Step 4: Simplify right side
   87,510x = 35,123,257,744
5. Step 5: Solve for x
   x = 35,123,257,744/87,510
6. Step 6: Final answer
   x = 401,362.79