Finding the Third Proportional to 456,638 and 723,030

Step by Step Solution

1. Step 1: Write the proportion equation
   456,638 : 723,030 = 723,030 : x
2. Step 2: Convert to fraction form
   456,638/723,030 = 723,030/x
3. Step 3: Cross multiply
   456,638x = 723,030 × 723,030
4. Step 4: Simplify right side
   456,638x = 522,772,380,900
5. Step 5: Solve for x
   x = 522,772,380,900/456,638
6. Step 6: Final answer
   x = 1,144,828.90