Finding the Third Proportional to 143,326 and 334,690

Step by Step Solution

1. Step 1: Write the proportion equation
   143,326 : 334,690 = 334,690 : x
2. Step 2: Convert to fraction form
   143,326/334,690 = 334,690/x
3. Step 3: Cross multiply
   143,326x = 334,690 × 334,690
4. Step 4: Simplify right side
   143,326x = 112,017,396,100
5. Step 5: Solve for x
   x = 112,017,396,100/143,326
6. Step 6: Final answer
   x = 781,556.70