Finding the Third Proportional to 69,720 and 152,400

Step by Step Solution

1. Step 1: Write the proportion equation
   69,720 : 152,400 = 152,400 : x
2. Step 2: Convert to fraction form
   69,720/152,400 = 152,400/x
3. Step 3: Cross multiply
   69,720x = 152,400 × 152,400
4. Step 4: Simplify right side
   69,720x = 23,225,760,000
5. Step 5: Solve for x
   x = 23,225,760,000/69,720
6. Step 6: Final answer
   x = 333,129.09