Finding the Third Proportional to 31,200 and 71,232

Step by Step Solution

1. Step 1: Write the proportion equation
   31,200 : 71,232 = 71,232 : x
2. Step 2: Convert to fraction form
   31,200/71,232 = 71,232/x
3. Step 3: Cross multiply
   31,200x = 71,232 × 71,232
4. Step 4: Simplify right side
   31,200x = 5,073,997,824
5. Step 5: Solve for x
   x = 5,073,997,824/31,200
6. Step 6: Final answer
   x = 162,628.14