Finding the Third Proportional to 172,078 and 369,074

Step by Step Solution

1. Step 1: Write the proportion equation
   172,078 : 369,074 = 369,074 : x
2. Step 2: Convert to fraction form
   172,078/369,074 = 369,074/x
3. Step 3: Cross multiply
   172,078x = 369,074 × 369,074
4. Step 4: Simplify right side
   172,078x = 136,215,617,476
5. Step 5: Solve for x
   x = 136,215,617,476/172,078
6. Step 6: Final answer
   x = 791,592.29