Finding the Third Proportional to 31,308 and 73,320

Step by Step Solution

1. Step 1: Write the proportion equation
   31,308 : 73,320 = 73,320 : x
2. Step 2: Convert to fraction form
   31,308/73,320 = 73,320/x
3. Step 3: Cross multiply
   31,308x = 73,320 × 73,320
4. Step 4: Simplify right side
   31,308x = 5,375,822,400
5. Step 5: Solve for x
   x = 5,375,822,400/31,308
6. Step 6: Final answer
   x = 171,707.63