Finding the Third Proportional to 335,730 and 721,153.50

Step by Step Solution

1. Step 1: Write the proportion equation
   335,730 : 721,153.50 = 721,153.50 : x
2. Step 2: Convert to fraction form
   335,730/721,153.50 = 721,153.50/x
3. Step 3: Cross multiply
   335,730x = 721,153.50 × 721,153.50
4. Step 4: Simplify right side
   335,730x = 520,062,370,562.25
5. Step 5: Solve for x
   x = 520,062,370,562.25/335,730
6. Step 6: Final answer
   x = 1,549,049.45