Finding the Third Proportional to 159,939 and 342,020

Step by Step Solution

1. Step 1: Write the proportion equation
   159,939 : 342,020 = 342,020 : x
2. Step 2: Convert to fraction form
   159,939/342,020 = 342,020/x
3. Step 3: Cross multiply
   159,939x = 342,020 × 342,020
4. Step 4: Simplify right side
   159,939x = 116,977,680,400
5. Step 5: Solve for x
   x = 116,977,680,400/159,939
6. Step 6: Final answer
   x = 731,389.34