Finding the Third Proportional to 333,849 and 721,155

Step by Step Solution

1. Step 1: Write the proportion equation
   333,849 : 721,155 = 721,155 : x
2. Step 2: Convert to fraction form
   333,849/721,155 = 721,155/x
3. Step 3: Cross multiply
   333,849x = 721,155 × 721,155
4. Step 4: Simplify right side
   333,849x = 520,064,534,025
5. Step 5: Solve for x
   x = 520,064,534,025/333,849
6. Step 6: Final answer
   x = 1,557,783.71