Finding the Third Proportional to 171,990 and 377,028

Step by Step Solution

1. Step 1: Write the proportion equation
   171,990 : 377,028 = 377,028 : x
2. Step 2: Convert to fraction form
   171,990/377,028 = 377,028/x
3. Step 3: Cross multiply
   171,990x = 377,028 × 377,028
4. Step 4: Simplify right side
   171,990x = 142,150,112,784
5. Step 5: Solve for x
   x = 142,150,112,784/171,990
6. Step 6: Final answer
   x = 826,502.20