Finding the Third Proportional to 158,611.50 and 343,359

Step by Step Solution

1. Step 1: Write the proportion equation
   158,611.50 : 343,359 = 343,359 : x
2. Step 2: Convert to fraction form
   158,611.50/343,359 = 343,359/x
3. Step 3: Cross multiply
   158,611.50x = 343,359 × 343,359
4. Step 4: Simplify right side
   158,611.50x = 117,895,402,881
5. Step 5: Solve for x
   x = 117,895,402,881/158,611.50
6. Step 6: Final answer
   x = 743,296.69