Finding the Third Proportional to 490,845 and 720,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   490,845 : 720,109.50 = 720,109.50 : x
2. Step 2: Convert to fraction form
   490,845/720,109.50 = 720,109.50/x
3. Step 3: Cross multiply
   490,845x = 720,109.50 × 720,109.50
4. Step 4: Simplify right side
   490,845x = 518,557,691,990.25
5. Step 5: Solve for x
   x = 518,557,691,990.25/490,845
6. Step 6: Final answer
   x = 1,056,459.15