Finding the Third Proportional to 605,389.50 and 1,317,186

Step by Step Solution

1. Step 1: Write the proportion equation
   605,389.50 : 1,317,186 = 1,317,186 : x
2. Step 2: Convert to fraction form
   605,389.50/1,317,186 = 1,317,186/x
3. Step 3: Cross multiply
   605,389.50x = 1,317,186 × 1,317,186
4. Step 4: Simplify right side
   605,389.50x = 1,734,978,958,596
5. Step 5: Solve for x
   x = 1,734,978,958,596/605,389.50
6. Step 6: Final answer
   x = 2,865,888.75