Finding the Third Proportional to 72,710 and 154,210

Step by Step Solution

1. Step 1: Write the proportion equation
   72,710 : 154,210 = 154,210 : x
2. Step 2: Convert to fraction form
   72,710/154,210 = 154,210/x
3. Step 3: Cross multiply
   72,710x = 154,210 × 154,210
4. Step 4: Simplify right side
   72,710x = 23,780,724,100
5. Step 5: Solve for x
   x = 23,780,724,100/72,710
6. Step 6: Final answer
   x = 327,062.63