Finding the Third Proportional to 31,211.63 and 68,262.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,211.63 : 68,262.38 = 68,262.38 : x
2. Step 2: Convert to fraction form
   31,211.63/68,262.38 = 68,262.38/x
3. Step 3: Cross multiply
   31,211.63x = 68,262.38 × 68,262.38
4. Step 4: Simplify right side
   31,211.63x = 4,659,751,840.64
5. Step 5: Solve for x
   x = 4,659,751,840.64/31,211.63
6. Step 6: Final answer
   x = 149,295.39