Finding the Third Proportional to 31,151.50 and 66,381.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,151.50 : 66,381.25 = 66,381.25 : x
2. Step 2: Convert to fraction form
   31,151.50/66,381.25 = 66,381.25/x
3. Step 3: Cross multiply
   31,151.50x = 66,381.25 × 66,381.25
4. Step 4: Simplify right side
   31,151.50x = 4,406,470,351.56
5. Step 5: Solve for x
   x = 4,406,470,351.56/31,151.50
6. Step 6: Final answer
   x = 141,452.91