Finding the Third Proportional to 185,058 and 398,189.25

Step by Step Solution

1. Step 1: Write the proportion equation
   185,058 : 398,189.25 = 398,189.25 : x
2. Step 2: Convert to fraction form
   185,058/398,189.25 = 398,189.25/x
3. Step 3: Cross multiply
   185,058x = 398,189.25 × 398,189.25
4. Step 4: Simplify right side
   185,058x = 158,554,678,815.56
5. Step 5: Solve for x
   x = 158,554,678,815.56/185,058
6. Step 6: Final answer
   x = 856,783.70