Finding the Third Proportional to 34,155 and 72,360

Step by Step Solution

1. Step 1: Write the proportion equation
   34,155 : 72,360 = 72,360 : x
2. Step 2: Convert to fraction form
   34,155/72,360 = 72,360/x
3. Step 3: Cross multiply
   34,155x = 72,360 × 72,360
4. Step 4: Simplify right side
   34,155x = 5,235,969,600
5. Step 5: Solve for x
   x = 5,235,969,600/34,155
6. Step 6: Final answer
   x = 153,300.24