Finding the Third Proportional to 31,621.22 and 67,725.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,621.22 : 67,725.28 = 67,725.28 : x
2. Step 2: Convert to fraction form
   31,621.22/67,725.28 = 67,725.28/x
3. Step 3: Cross multiply
   31,621.22x = 67,725.28 × 67,725.28
4. Step 4: Simplify right side
   31,621.22x = 4,586,713,720.39
5. Step 5: Solve for x
   x = 4,586,713,720.39/31,621.22
6. Step 6: Final answer
   x = 145,051.77