Finding the Third Proportional to 31,120 and 67,492

Step by Step Solution

1. Step 1: Write the proportion equation
   31,120 : 67,492 = 67,492 : x
2. Step 2: Convert to fraction form
   31,120/67,492 = 67,492/x
3. Step 3: Cross multiply
   31,120x = 67,492 × 67,492
4. Step 4: Simplify right side
   31,120x = 4,555,170,064
5. Step 5: Solve for x
   x = 4,555,170,064/31,120
6. Step 6: Final answer
   x = 146,374.36