Finding the Third Proportional to 244,620 and 389,164.50

Step by Step Solution

1. Step 1: Write the proportion equation
   244,620 : 389,164.50 = 389,164.50 : x
2. Step 2: Convert to fraction form
   244,620/389,164.50 = 389,164.50/x
3. Step 3: Cross multiply
   244,620x = 389,164.50 × 389,164.50
4. Step 4: Simplify right side
   244,620x = 151,449,008,060.25
5. Step 5: Solve for x
   x = 151,449,008,060.25/244,620
6. Step 6: Final answer
   x = 619,119.48