Finding the Third Proportional to 142,740 and 310,084

Step by Step Solution

1. Step 1: Write the proportion equation
   142,740 : 310,084 = 310,084 : x
2. Step 2: Convert to fraction form
   142,740/310,084 = 310,084/x
3. Step 3: Cross multiply
   142,740x = 310,084 × 310,084
4. Step 4: Simplify right side
   142,740x = 96,152,087,056
5. Step 5: Solve for x
   x = 96,152,087,056/142,740
6. Step 6: Final answer
   x = 673,616.98