Finding the Third Proportional to 31,171.50 and 64,560.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,171.50 : 64,560.38 = 64,560.38 : x
2. Step 2: Convert to fraction form
   31,171.50/64,560.38 = 64,560.38/x
3. Step 3: Cross multiply
   31,171.50x = 64,560.38 × 64,560.38
4. Step 4: Simplify right side
   31,171.50x = 4,168,042,020.14
5. Step 5: Solve for x
   x = 4,168,042,020.14/31,171.50
6. Step 6: Final answer
   x = 133,713.23