Finding the Third Proportional to 309,096 and 656,100

Step by Step Solution

1. Step 1: Write the proportion equation
   309,096 : 656,100 = 656,100 : x
2. Step 2: Convert to fraction form
   309,096/656,100 = 656,100/x
3. Step 3: Cross multiply
   309,096x = 656,100 × 656,100
4. Step 4: Simplify right side
   309,096x = 430,467,210,000
5. Step 5: Solve for x
   x = 430,467,210,000/309,096
6. Step 6: Final answer
   x = 1,392,665.09