Finding the Third Proportional to 386,330 and 590,976.75

Step by Step Solution

1. Step 1: Write the proportion equation
   386,330 : 590,976.75 = 590,976.75 : x
2. Step 2: Convert to fraction form
   386,330/590,976.75 = 590,976.75/x
3. Step 3: Cross multiply
   386,330x = 590,976.75 × 590,976.75
4. Step 4: Simplify right side
   386,330x = 349,253,519,040.56
5. Step 5: Solve for x
   x = 349,253,519,040.56/386,330
6. Step 6: Final answer
   x = 904,028.99