Finding the Third Proportional to 31,268.25 and 66,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,268.25 : 66,910.50 = 66,910.50 : x
2. Step 2: Convert to fraction form
   31,268.25/66,910.50 = 66,910.50/x
3. Step 3: Cross multiply
   31,268.25x = 66,910.50 × 66,910.50
4. Step 4: Simplify right side
   31,268.25x = 4,477,015,010.25
5. Step 5: Solve for x
   x = 4,477,015,010.25/31,268.25
6. Step 6: Final answer
   x = 143,180.86