Finding the Third Proportional to 31,860 and 70,152.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,860 : 70,152.75 = 70,152.75 : x
2. Step 2: Convert to fraction form
   31,860/70,152.75 = 70,152.75/x
3. Step 3: Cross multiply
   31,860x = 70,152.75 × 70,152.75
4. Step 4: Simplify right side
   31,860x = 4,921,408,332.56
5. Step 5: Solve for x
   x = 4,921,408,332.56/31,860
6. Step 6: Final answer
   x = 154,469.82