Finding the Third Proportional to 59,190 and 89,399

Step by Step Solution

1. Step 1: Write the proportion equation
   59,190 : 89,399 = 89,399 : x
2. Step 2: Convert to fraction form
   59,190/89,399 = 89,399/x
3. Step 3: Cross multiply
   59,190x = 89,399 × 89,399
4. Step 4: Simplify right side
   59,190x = 7,992,181,201
5. Step 5: Solve for x
   x = 7,992,181,201/59,190
6. Step 6: Final answer
   x = 135,025.87