Finding the Third Proportional to 31,059.75 and 67,037.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,059.75 : 67,037.25 = 67,037.25 : x
2. Step 2: Convert to fraction form
   31,059.75/67,037.25 = 67,037.25/x
3. Step 3: Cross multiply
   31,059.75x = 67,037.25 × 67,037.25
4. Step 4: Simplify right side
   31,059.75x = 4,493,992,887.56
5. Step 5: Solve for x
   x = 4,493,992,887.56/31,059.75
6. Step 6: Final answer
   x = 144,688.64