Finding the Third Proportional to 157,786.50 and 339,630

Step by Step Solution

1. Step 1: Write the proportion equation
   157,786.50 : 339,630 = 339,630 : x
2. Step 2: Convert to fraction form
   157,786.50/339,630 = 339,630/x
3. Step 3: Cross multiply
   157,786.50x = 339,630 × 339,630
4. Step 4: Simplify right side
   157,786.50x = 115,348,536,900
5. Step 5: Solve for x
   x = 115,348,536,900/157,786.50
6. Step 6: Final answer
   x = 731,041.86