Finding the Third Proportional to 34,430 and 72,960

Step by Step Solution

1. Step 1: Write the proportion equation
   34,430 : 72,960 = 72,960 : x
2. Step 2: Convert to fraction form
   34,430/72,960 = 72,960/x
3. Step 3: Cross multiply
   34,430x = 72,960 × 72,960
4. Step 4: Simplify right side
   34,430x = 5,323,161,600
5. Step 5: Solve for x
   x = 5,323,161,600/34,430
6. Step 6: Final answer
   x = 154,608.24