Finding the Third Proportional to 151,213.50 and 329,643

Step by Step Solution

1. Step 1: Write the proportion equation
   151,213.50 : 329,643 = 329,643 : x
2. Step 2: Convert to fraction form
   151,213.50/329,643 = 329,643/x
3. Step 3: Cross multiply
   151,213.50x = 329,643 × 329,643
4. Step 4: Simplify right side
   151,213.50x = 108,664,507,449
5. Step 5: Solve for x
   x = 108,664,507,449/151,213.50
6. Step 6: Final answer
   x = 718,616.44