Finding the Third Proportional to 583,665 and 1,257,388.50

Step by Step Solution

1. Step 1: Write the proportion equation
   583,665 : 1,257,388.50 = 1,257,388.50 : x
2. Step 2: Convert to fraction form
   583,665/1,257,388.50 = 1,257,388.50/x
3. Step 3: Cross multiply
   583,665x = 1,257,388.50 × 1,257,388.50
4. Step 4: Simplify right side
   583,665x = 1,581,025,839,932.25
5. Step 5: Solve for x
   x = 1,581,025,839,932.25/583,665
6. Step 6: Final answer
   x = 2,708,789.87