Finding the Third Proportional to 140,803.31 and 305,587.69

Step by Step Solution

1. Step 1: Write the proportion equation
   140,803.31 : 305,587.69 = 305,587.69 : x
2. Step 2: Convert to fraction form
   140,803.31/305,587.69 = 305,587.69/x
3. Step 3: Cross multiply
   140,803.31x = 305,587.69 × 305,587.69
4. Step 4: Simplify right side
   140,803.31x = 93,383,834,751.60
5. Step 5: Solve for x
   x = 93,383,834,751.60/140,803.31
6. Step 6: Final answer
   x = 663,221.86