Finding the Third Proportional to 185,528 and 397,290

Step by Step Solution

1. Step 1: Write the proportion equation
   185,528 : 397,290 = 397,290 : x
2. Step 2: Convert to fraction form
   185,528/397,290 = 397,290/x
3. Step 3: Cross multiply
   185,528x = 397,290 × 397,290
4. Step 4: Simplify right side
   185,528x = 157,839,344,100
5. Step 5: Solve for x
   x = 157,839,344,100/185,528
6. Step 6: Final answer
   x = 850,757.54