Finding the Third Proportional to 35,920.75 and 78,529.25

Step by Step Solution

1. Step 1: Write the proportion equation
   35,920.75 : 78,529.25 = 78,529.25 : x
2. Step 2: Convert to fraction form
   35,920.75/78,529.25 = 78,529.25/x
3. Step 3: Cross multiply
   35,920.75x = 78,529.25 × 78,529.25
4. Step 4: Simplify right side
   35,920.75x = 6,166,843,105.56
5. Step 5: Solve for x
   x = 6,166,843,105.56/35,920.75
6. Step 6: Final answer
   x = 171,679.13