Finding the Third Proportional to 152,128.50 and 339,237

Step by Step Solution

1. Step 1: Write the proportion equation
   152,128.50 : 339,237 = 339,237 : x
2. Step 2: Convert to fraction form
   152,128.50/339,237 = 339,237/x
3. Step 3: Cross multiply
   152,128.50x = 339,237 × 339,237
4. Step 4: Simplify right side
   152,128.50x = 115,081,742,169
5. Step 5: Solve for x
   x = 115,081,742,169/152,128.50
6. Step 6: Final answer
   x = 756,477.20