Finding the Third Proportional to 31,434.75 and 67,368.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,434.75 : 67,368.38 = 67,368.38 : x
2. Step 2: Convert to fraction form
   31,434.75/67,368.38 = 67,368.38/x
3. Step 3: Cross multiply
   31,434.75x = 67,368.38 × 67,368.38
4. Step 4: Simplify right side
   31,434.75x = 4,538,497,950.14
5. Step 5: Solve for x
   x = 4,538,497,950.14/31,434.75
6. Step 6: Final answer
   x = 144,378.37