Finding the Third Proportional to 172,651.50 and 369,288

Step by Step Solution

1. Step 1: Write the proportion equation
   172,651.50 : 369,288 = 369,288 : x
2. Step 2: Convert to fraction form
   172,651.50/369,288 = 369,288/x
3. Step 3: Cross multiply
   172,651.50x = 369,288 × 369,288
4. Step 4: Simplify right side
   172,651.50x = 136,373,626,944
5. Step 5: Solve for x
   x = 136,373,626,944/172,651.50
6. Step 6: Final answer
   x = 789,878.03