Finding the Third Proportional to 141,643.69 and 311,196.94

Step by Step Solution

1. Step 1: Write the proportion equation
   141,643.69 : 311,196.94 = 311,196.94 : x
2. Step 2: Convert to fraction form
   141,643.69/311,196.94 = 311,196.94/x
3. Step 3: Cross multiply
   141,643.69x = 311,196.94 × 311,196.94
4. Step 4: Simplify right side
   141,643.69x = 96,843,533,909.38
5. Step 5: Solve for x
   x = 96,843,533,909.38/141,643.69
6. Step 6: Final answer
   x = 683,712.32