Finding the Third Proportional to 31,161.75 and 68,554.13

Step by Step Solution

1. Step 1: Write the proportion equation
   31,161.75 : 68,554.13 = 68,554.13 : x
2. Step 2: Convert to fraction form
   31,161.75/68,554.13 = 68,554.13/x
3. Step 3: Cross multiply
   31,161.75x = 68,554.13 × 68,554.13
4. Step 4: Simplify right side
   31,161.75x = 4,699,668,054.52
5. Step 5: Solve for x
   x = 4,699,668,054.52/31,161.75
6. Step 6: Final answer
   x = 150,815.28