Finding the Third Proportional to 192,420 and 445,402.69

Step by Step Solution

1. Step 1: Write the proportion equation
   192,420 : 445,402.69 = 445,402.69 : x
2. Step 2: Convert to fraction form
   192,420/445,402.69 = 445,402.69/x
3. Step 3: Cross multiply
   192,420x = 445,402.69 × 445,402.69
4. Step 4: Simplify right side
   192,420x = 198,383,554,032.22
5. Step 5: Solve for x
   x = 198,383,554,032.22/192,420
6. Step 6: Final answer
   x = 1,030,992.38