Finding the Third Proportional to 389,259 and 844,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   389,259 : 844,978.50 = 844,978.50 : x
2. Step 2: Convert to fraction form
   389,259/844,978.50 = 844,978.50/x
3. Step 3: Cross multiply
   389,259x = 844,978.50 × 844,978.50
4. Step 4: Simplify right side
   389,259x = 713,988,665,462.25
5. Step 5: Solve for x
   x = 713,988,665,462.25/389,259
6. Step 6: Final answer
   x = 1,834,225.20