Finding the Third Proportional to 153,395 and 328,648

Step by Step Solution

1. Step 1: Write the proportion equation
   153,395 : 328,648 = 328,648 : x
2. Step 2: Convert to fraction form
   153,395/328,648 = 328,648/x
3. Step 3: Cross multiply
   153,395x = 328,648 × 328,648
4. Step 4: Simplify right side
   153,395x = 108,009,507,904
5. Step 5: Solve for x
   x = 108,009,507,904/153,395
6. Step 6: Final answer
   x = 704,126.65