Finding the Third Proportional to 426,219 and 710,266.50

Step by Step Solution

1. Step 1: Write the proportion equation
   426,219 : 710,266.50 = 710,266.50 : x
2. Step 2: Convert to fraction form
   426,219/710,266.50 = 710,266.50/x
3. Step 3: Cross multiply
   426,219x = 710,266.50 × 710,266.50
4. Step 4: Simplify right side
   426,219x = 504,478,501,022.25
5. Step 5: Solve for x
   x = 504,478,501,022.25/426,219
6. Step 6: Final answer
   x = 1,183,613.36