Finding the Third Proportional to 72,512 and 153,600

Step by Step Solution

1. Step 1: Write the proportion equation
   72,512 : 153,600 = 153,600 : x
2. Step 2: Convert to fraction form
   72,512/153,600 = 153,600/x
3. Step 3: Cross multiply
   72,512x = 153,600 × 153,600
4. Step 4: Simplify right side
   72,512x = 23,592,960,000
5. Step 5: Solve for x
   x = 23,592,960,000/72,512
6. Step 6: Final answer
   x = 325,366.28