Finding the Third Proportional to 31,345.50 and 67,065

Step by Step Solution

1. Step 1: Write the proportion equation
   31,345.50 : 67,065 = 67,065 : x
2. Step 2: Convert to fraction form
   31,345.50/67,065 = 67,065/x
3. Step 3: Cross multiply
   31,345.50x = 67,065 × 67,065
4. Step 4: Simplify right side
   31,345.50x = 4,497,714,225
5. Step 5: Solve for x
   x = 4,497,714,225/31,345.50
6. Step 6: Final answer
   x = 143,488.35