Finding the Third Proportional to 155,742 and 222,710

Step by Step Solution

1. Step 1: Write the proportion equation
   155,742 : 222,710 = 222,710 : x
2. Step 2: Convert to fraction form
   155,742/222,710 = 222,710/x
3. Step 3: Cross multiply
   155,742x = 222,710 × 222,710
4. Step 4: Simplify right side
   155,742x = 49,599,744,100
5. Step 5: Solve for x
   x = 49,599,744,100/155,742
6. Step 6: Final answer
   x = 318,473.78