Finding the Third Proportional to 278,901.75 and 604,170

Step by Step Solution

1. Step 1: Write the proportion equation
   278,901.75 : 604,170 = 604,170 : x
2. Step 2: Convert to fraction form
   278,901.75/604,170 = 604,170/x
3. Step 3: Cross multiply
   278,901.75x = 604,170 × 604,170
4. Step 4: Simplify right side
   278,901.75x = 365,021,388,900
5. Step 5: Solve for x
   x = 365,021,388,900/278,901.75
6. Step 6: Final answer
   x = 1,308,781.28