Finding the Third Proportional to 234,402 and 485,412

Step by Step Solution

1. Step 1: Write the proportion equation
   234,402 : 485,412 = 485,412 : x
2. Step 2: Convert to fraction form
   234,402/485,412 = 485,412/x
3. Step 3: Cross multiply
   234,402x = 485,412 × 485,412
4. Step 4: Simplify right side
   234,402x = 235,624,809,744
5. Step 5: Solve for x
   x = 235,624,809,744/234,402
6. Step 6: Final answer
   x = 1,005,216.72