Finding the Third Proportional to 459,819 and 717,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   459,819 : 717,667.50 = 717,667.50 : x
2. Step 2: Convert to fraction form
   459,819/717,667.50 = 717,667.50/x
3. Step 3: Cross multiply
   459,819x = 717,667.50 × 717,667.50
4. Step 4: Simplify right side
   459,819x = 515,046,640,556.25
5. Step 5: Solve for x
   x = 515,046,640,556.25/459,819
6. Step 6: Final answer
   x = 1,120,107.35