Finding the Third Proportional to 151,212 and 329,640

Step by Step Solution

1. Step 1: Write the proportion equation
   151,212 : 329,640 = 329,640 : x
2. Step 2: Convert to fraction form
   151,212/329,640 = 329,640/x
3. Step 3: Cross multiply
   151,212x = 329,640 × 329,640
4. Step 4: Simplify right side
   151,212x = 108,662,529,600
5. Step 5: Solve for x
   x = 108,662,529,600/151,212
6. Step 6: Final answer
   x = 718,610.49