Finding the Third Proportional to 154,704 and 329,640

Step by Step Solution

1. Step 1: Write the proportion equation
   154,704 : 329,640 = 329,640 : x
2. Step 2: Convert to fraction form
   154,704/329,640 = 329,640/x
3. Step 3: Cross multiply
   154,704x = 329,640 × 329,640
4. Step 4: Simplify right side
   154,704x = 108,662,529,600
5. Step 5: Solve for x
   x = 108,662,529,600/154,704
6. Step 6: Final answer
   x = 702,389.92