Finding the Third Proportional to 33,210 and 72,900

Step by Step Solution

1. Step 1: Write the proportion equation
   33,210 : 72,900 = 72,900 : x
2. Step 2: Convert to fraction form
   33,210/72,900 = 72,900/x
3. Step 3: Cross multiply
   33,210x = 72,900 × 72,900
4. Step 4: Simplify right side
   33,210x = 5,314,410,000
5. Step 5: Solve for x
   x = 5,314,410,000/33,210
6. Step 6: Final answer
   x = 160,024.39