Finding the Third Proportional to 140,394 and 300,084

Step by Step Solution

1. Step 1: Write the proportion equation
   140,394 : 300,084 = 300,084 : x
2. Step 2: Convert to fraction form
   140,394/300,084 = 300,084/x
3. Step 3: Cross multiply
   140,394x = 300,084 × 300,084
4. Step 4: Simplify right side
   140,394x = 90,050,407,056
5. Step 5: Solve for x
   x = 90,050,407,056/140,394
6. Step 6: Final answer
   x = 641,412.08