Finding the Third Proportional to 321,672 and 702,960

Step by Step Solution

1. Step 1: Write the proportion equation
   321,672 : 702,960 = 702,960 : x
2. Step 2: Convert to fraction form
   321,672/702,960 = 702,960/x
3. Step 3: Cross multiply
   321,672x = 702,960 × 702,960
4. Step 4: Simplify right side
   321,672x = 494,152,761,600
5. Step 5: Solve for x
   x = 494,152,761,600/321,672
6. Step 6: Final answer
   x = 1,536,200.73