Finding the Third Proportional to 31,920.33 and 69,581.53

Step by Step Solution

1. Step 1: Write the proportion equation
   31,920.33 : 69,581.53 = 69,581.53 : x
2. Step 2: Convert to fraction form
   31,920.33/69,581.53 = 69,581.53/x
3. Step 3: Cross multiply
   31,920.33x = 69,581.53 × 69,581.53
4. Step 4: Simplify right side
   31,920.33x = 4,841,589,491.09
5. Step 5: Solve for x
   x = 4,841,589,491.09/31,920.33
6. Step 6: Final answer
   x = 151,677.31