Finding the Third Proportional to 142,772 and 187,790

Step by Step Solution

1. Step 1: Write the proportion equation
   142,772 : 187,790 = 187,790 : x
2. Step 2: Convert to fraction form
   142,772/187,790 = 187,790/x
3. Step 3: Cross multiply
   142,772x = 187,790 × 187,790
4. Step 4: Simplify right side
   142,772x = 35,265,084,100
5. Step 5: Solve for x
   x = 35,265,084,100/142,772
6. Step 6: Final answer
   x = 247,002.80