Finding the Third Proportional to 189,916 and 300,730

Step by Step Solution

1. Step 1: Write the proportion equation
   189,916 : 300,730 = 300,730 : x
2. Step 2: Convert to fraction form
   189,916/300,730 = 300,730/x
3. Step 3: Cross multiply
   189,916x = 300,730 × 300,730
4. Step 4: Simplify right side
   189,916x = 90,438,532,900
5. Step 5: Solve for x
   x = 90,438,532,900/189,916
6. Step 6: Final answer
   x = 476,202.81