Finding the Third Proportional to 31,348.69 and 68,409.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,348.69 : 68,409.56 = 68,409.56 : x
2. Step 2: Convert to fraction form
   31,348.69/68,409.56 = 68,409.56/x
3. Step 3: Cross multiply
   31,348.69x = 68,409.56 × 68,409.56
4. Step 4: Simplify right side
   31,348.69x = 4,679,868,241.44
5. Step 5: Solve for x
   x = 4,679,868,241.44/31,348.69
6. Step 6: Final answer
   x = 149,284.34