Finding the Third Proportional to 157,419.50 and 339,716

Step by Step Solution

1. Step 1: Write the proportion equation
   157,419.50 : 339,716 = 339,716 : x
2. Step 2: Convert to fraction form
   157,419.50/339,716 = 339,716/x
3. Step 3: Cross multiply
   157,419.50x = 339,716 × 339,716
4. Step 4: Simplify right side
   157,419.50x = 115,406,960,656
5. Step 5: Solve for x
   x = 115,406,960,656/157,419.50
6. Step 6: Final answer
   x = 733,117.31