Finding the Third Proportional to 57,642 and 90,227

Step by Step Solution

1. Step 1: Write the proportion equation
   57,642 : 90,227 = 90,227 : x
2. Step 2: Convert to fraction form
   57,642/90,227 = 90,227/x
3. Step 3: Cross multiply
   57,642x = 90,227 × 90,227
4. Step 4: Simplify right side
   57,642x = 8,140,911,529
5. Step 5: Solve for x
   x = 8,140,911,529/57,642
6. Step 6: Final answer
   x = 141,232.29