Finding the Third Proportional to 146,328 and 345,072

Step by Step Solution

1. Step 1: Write the proportion equation
   146,328 : 345,072 = 345,072 : x
2. Step 2: Convert to fraction form
   146,328/345,072 = 345,072/x
3. Step 3: Cross multiply
   146,328x = 345,072 × 345,072
4. Step 4: Simplify right side
   146,328x = 119,074,685,184
5. Step 5: Solve for x
   x = 119,074,685,184/146,328
6. Step 6: Final answer
   x = 813,751.88