Finding the Third Proportional to 353,322 and 766,422

Step by Step Solution

1. Step 1: Write the proportion equation
   353,322 : 766,422 = 766,422 : x
2. Step 2: Convert to fraction form
   353,322/766,422 = 766,422/x
3. Step 3: Cross multiply
   353,322x = 766,422 × 766,422
4. Step 4: Simplify right side
   353,322x = 587,402,682,084
5. Step 5: Solve for x
   x = 587,402,682,084/353,322
6. Step 6: Final answer
   x = 1,662,513.75