Finding the Third Proportional to 152,131.50 and 339,243

Step by Step Solution

1. Step 1: Write the proportion equation
   152,131.50 : 339,243 = 339,243 : x
2. Step 2: Convert to fraction form
   152,131.50/339,243 = 339,243/x
3. Step 3: Cross multiply
   152,131.50x = 339,243 × 339,243
4. Step 4: Simplify right side
   152,131.50x = 115,085,813,049
5. Step 5: Solve for x
   x = 115,085,813,049/152,131.50
6. Step 6: Final answer
   x = 756,489.04