Finding the Third Proportional to 210,316 and 300,462

Step by Step Solution

1. Step 1: Write the proportion equation
   210,316 : 300,462 = 300,462 : x
2. Step 2: Convert to fraction form
   210,316/300,462 = 300,462/x
3. Step 3: Cross multiply
   210,316x = 300,462 × 300,462
4. Step 4: Simplify right side
   210,316x = 90,277,413,444
5. Step 5: Solve for x
   x = 90,277,413,444/210,316
6. Step 6: Final answer
   x = 429,246.53