Finding the Third Proportional to 215,030 and 300,754

Step by Step Solution

1. Step 1: Write the proportion equation
   215,030 : 300,754 = 300,754 : x
2. Step 2: Convert to fraction form
   215,030/300,754 = 300,754/x
3. Step 3: Cross multiply
   215,030x = 300,754 × 300,754
4. Step 4: Simplify right side
   215,030x = 90,452,968,516
5. Step 5: Solve for x
   x = 90,452,968,516/215,030
6. Step 6: Final answer
   x = 420,652.79