Finding the Third Proportional to 146,688 and 321,426

Step by Step Solution

1. Step 1: Write the proportion equation
   146,688 : 321,426 = 321,426 : x
2. Step 2: Convert to fraction form
   146,688/321,426 = 321,426/x
3. Step 3: Cross multiply
   146,688x = 321,426 × 321,426
4. Step 4: Simplify right side
   146,688x = 103,314,673,476
5. Step 5: Solve for x
   x = 103,314,673,476/146,688
6. Step 6: Final answer
   x = 704,315.78