Finding the Third Proportional to 335,736 and 721,165.50

Step by Step Solution

1. Step 1: Write the proportion equation
   335,736 : 721,165.50 = 721,165.50 : x
2. Step 2: Convert to fraction form
   335,736/721,165.50 = 721,165.50/x
3. Step 3: Cross multiply
   335,736x = 721,165.50 × 721,165.50
4. Step 4: Simplify right side
   335,736x = 520,079,678,390.25
5. Step 5: Solve for x
   x = 520,079,678,390.25/335,736
6. Step 6: Final answer
   x = 1,549,073.31