Finding the Third Proportional to 31,009.50 and 45,920.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,009.50 : 45,920.25 = 45,920.25 : x
2. Step 2: Convert to fraction form
   31,009.50/45,920.25 = 45,920.25/x
3. Step 3: Cross multiply
   31,009.50x = 45,920.25 × 45,920.25
4. Step 4: Simplify right side
   31,009.50x = 2,108,669,360.06
5. Step 5: Solve for x
   x = 2,108,669,360.06/31,009.50
6. Step 6: Final answer
   x = 68,000.75