Finding the Third Proportional to 329,628 and 718,008

Step by Step Solution

1. Step 1: Write the proportion equation
   329,628 : 718,008 = 718,008 : x
2. Step 2: Convert to fraction form
   329,628/718,008 = 718,008/x
3. Step 3: Cross multiply
   329,628x = 718,008 × 718,008
4. Step 4: Simplify right side
   329,628x = 515,535,488,064
5. Step 5: Solve for x
   x = 515,535,488,064/329,628
6. Step 6: Final answer
   x = 1,563,991.80