Finding the Third Proportional to 143,760.50 and 311,956

Step by Step Solution

1. Step 1: Write the proportion equation
   143,760.50 : 311,956 = 311,956 : x
2. Step 2: Convert to fraction form
   143,760.50/311,956 = 311,956/x
3. Step 3: Cross multiply
   143,760.50x = 311,956 × 311,956
4. Step 4: Simplify right side
   143,760.50x = 97,316,545,936
5. Step 5: Solve for x
   x = 97,316,545,936/143,760.50
6. Step 6: Final answer
   x = 676,935.22