Finding the Third Proportional to 80,307 and 105,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   80,307 : 105,628.50 = 105,628.50 : x
2. Step 2: Convert to fraction form
   80,307/105,628.50 = 105,628.50/x
3. Step 3: Cross multiply
   80,307x = 105,628.50 × 105,628.50
4. Step 4: Simplify right side
   80,307x = 11,157,380,012.25
5. Step 5: Solve for x
   x = 11,157,380,012.25/80,307
6. Step 6: Final answer
   x = 138,934.09