Finding the Third Proportional to 32,920 and 72,428

Step by Step Solution

1. Step 1: Write the proportion equation
   32,920 : 72,428 = 72,428 : x
2. Step 2: Convert to fraction form
   32,920/72,428 = 72,428/x
3. Step 3: Cross multiply
   32,920x = 72,428 × 72,428
4. Step 4: Simplify right side
   32,920x = 5,245,815,184
5. Step 5: Solve for x
   x = 5,245,815,184/32,920
6. Step 6: Final answer
   x = 159,350.40