Finding the Third Proportional to 185,218 and 398,050

Step by Step Solution

1. Step 1: Write the proportion equation
   185,218 : 398,050 = 398,050 : x
2. Step 2: Convert to fraction form
   185,218/398,050 = 398,050/x
3. Step 3: Cross multiply
   185,218x = 398,050 × 398,050
4. Step 4: Simplify right side
   185,218x = 158,443,802,500
5. Step 5: Solve for x
   x = 158,443,802,500/185,218
6. Step 6: Final answer
   x = 855,444.95