Finding the Third Proportional to 31,691.25 and 69,933.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,691.25 : 69,933.38 = 69,933.38 : x
2. Step 2: Convert to fraction form
   31,691.25/69,933.38 = 69,933.38/x
3. Step 3: Cross multiply
   31,691.25x = 69,933.38 × 69,933.38
4. Step 4: Simplify right side
   31,691.25x = 4,890,676,938.89
5. Step 5: Solve for x
   x = 4,890,676,938.89/31,691.25
6. Step 6: Final answer
   x = 154,322.63