Finding the Third Proportional to 65,580 and 153,960

Step by Step Solution

1. Step 1: Write the proportion equation
   65,580 : 153,960 = 153,960 : x
2. Step 2: Convert to fraction form
   65,580/153,960 = 153,960/x
3. Step 3: Cross multiply
   65,580x = 153,960 × 153,960
4. Step 4: Simplify right side
   65,580x = 23,703,681,600
5. Step 5: Solve for x
   x = 23,703,681,600/65,580
6. Step 6: Final answer
   x = 361,446.81