Finding the Third Proportional to 31,203 and 67,590

Step by Step Solution

1. Step 1: Write the proportion equation
   31,203 : 67,590 = 67,590 : x
2. Step 2: Convert to fraction form
   31,203/67,590 = 67,590/x
3. Step 3: Cross multiply
   31,203x = 67,590 × 67,590
4. Step 4: Simplify right side
   31,203x = 4,568,408,100
5. Step 5: Solve for x
   x = 4,568,408,100/31,203
6. Step 6: Final answer
   x = 146,409.26