Finding the Third Proportional to 59,013 and 90,240

Step by Step Solution

1. Step 1: Write the proportion equation
   59,013 : 90,240 = 90,240 : x
2. Step 2: Convert to fraction form
   59,013/90,240 = 90,240/x
3. Step 3: Cross multiply
   59,013x = 90,240 × 90,240
4. Step 4: Simplify right side
   59,013x = 8,143,257,600
5. Step 5: Solve for x
   x = 8,143,257,600/59,013
6. Step 6: Final answer
   x = 137,990.91