Finding the Third Proportional to 355,216 and 755,648

Step by Step Solution

1. Step 1: Write the proportion equation
   355,216 : 755,648 = 755,648 : x
2. Step 2: Convert to fraction form
   355,216/755,648 = 755,648/x
3. Step 3: Cross multiply
   355,216x = 755,648 × 755,648
4. Step 4: Simplify right side
   355,216x = 571,003,899,904
5. Step 5: Solve for x
   x = 571,003,899,904/355,216
6. Step 6: Final answer
   x = 1,607,483.62