Finding the Third Proportional to 476,890.50 and 720,196.50

Step by Step Solution

1. Step 1: Write the proportion equation
   476,890.50 : 720,196.50 = 720,196.50 : x
2. Step 2: Convert to fraction form
   476,890.50/720,196.50 = 720,196.50/x
3. Step 3: Cross multiply
   476,890.50x = 720,196.50 × 720,196.50
4. Step 4: Simplify right side
   476,890.50x = 518,682,998,612.25
5. Step 5: Solve for x
   x = 518,682,998,612.25/476,890.50
6. Step 6: Final answer
   x = 1,087,635.42