Finding the Third Proportional to 31,475.81 and 67,610.53

Step by Step Solution

1. Step 1: Write the proportion equation
   31,475.81 : 67,610.53 = 67,610.53 : x
2. Step 2: Convert to fraction form
   31,475.81/67,610.53 = 67,610.53/x
3. Step 3: Cross multiply
   31,475.81x = 67,610.53 × 67,610.53
4. Step 4: Simplify right side
   31,475.81x = 4,571,183,935.91
5. Step 5: Solve for x
   x = 4,571,183,935.91/31,475.81
6. Step 6: Final answer
   x = 145,228.47