Finding the Third Proportional to 31,196.25 and 66,426.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,196.25 : 66,426.75 = 66,426.75 : x
2. Step 2: Convert to fraction form
   31,196.25/66,426.75 = 66,426.75/x
3. Step 3: Cross multiply
   31,196.25x = 66,426.75 × 66,426.75
4. Step 4: Simplify right side
   31,196.25x = 4,412,513,115.56
5. Step 5: Solve for x
   x = 4,412,513,115.56/31,196.25
6. Step 6: Final answer
   x = 141,443.70