Finding the Third Proportional to 158,590.13 and 231,931.69

Step by Step Solution

1. Step 1: Write the proportion equation
   158,590.13 : 231,931.69 = 231,931.69 : x
2. Step 2: Convert to fraction form
   158,590.13/231,931.69 = 231,931.69/x
3. Step 3: Cross multiply
   158,590.13x = 231,931.69 × 231,931.69
4. Step 4: Simplify right side
   158,590.13x = 53,792,307,666.60
5. Step 5: Solve for x
   x = 53,792,307,666.60/158,590.13
6. Step 6: Final answer
   x = 339,190.78