Finding the Third Proportional to 426,235 and 710,290.50

Step by Step Solution

1. Step 1: Write the proportion equation
   426,235 : 710,290.50 = 710,290.50 : x
2. Step 2: Convert to fraction form
   426,235/710,290.50 = 710,290.50/x
3. Step 3: Cross multiply
   426,235x = 710,290.50 × 710,290.50
4. Step 4: Simplify right side
   426,235x = 504,512,594,390.25
5. Step 5: Solve for x
   x = 504,512,594,390.25/426,235
6. Step 6: Final answer
   x = 1,183,648.91