Finding the Third Proportional to 40,722.75 and 74,864.25

Step by Step Solution

1. Step 1: Write the proportion equation
   40,722.75 : 74,864.25 = 74,864.25 : x
2. Step 2: Convert to fraction form
   40,722.75/74,864.25 = 74,864.25/x
3. Step 3: Cross multiply
   40,722.75x = 74,864.25 × 74,864.25
4. Step 4: Simplify right side
   40,722.75x = 5,604,655,928.06
5. Step 5: Solve for x
   x = 5,604,655,928.06/40,722.75
6. Step 6: Final answer
   x = 137,629.60