Finding the Third Proportional to 57,510 and 90,234

Step by Step Solution

1. Step 1: Write the proportion equation
   57,510 : 90,234 = 90,234 : x
2. Step 2: Convert to fraction form
   57,510/90,234 = 90,234/x
3. Step 3: Cross multiply
   57,510x = 90,234 × 90,234
4. Step 4: Simplify right side
   57,510x = 8,142,174,756
5. Step 5: Solve for x
   x = 8,142,174,756/57,510
6. Step 6: Final answer
   x = 141,578.42