Finding the Third Proportional to 82,390.50 and 111,919.50

Step by Step Solution

1. Step 1: Write the proportion equation
   82,390.50 : 111,919.50 = 111,919.50 : x
2. Step 2: Convert to fraction form
   82,390.50/111,919.50 = 111,919.50/x
3. Step 3: Cross multiply
   82,390.50x = 111,919.50 × 111,919.50
4. Step 4: Simplify right side
   82,390.50x = 12,525,974,480.25
5. Step 5: Solve for x
   x = 12,525,974,480.25/82,390.50
6. Step 6: Final answer
   x = 152,031.78