Finding the Third Proportional to 140,195.81 and 300,074.63

Step by Step Solution

1. Step 1: Write the proportion equation
   140,195.81 : 300,074.63 = 300,074.63 : x
2. Step 2: Convert to fraction form
   140,195.81/300,074.63 = 300,074.63/x
3. Step 3: Cross multiply
   140,195.81x = 300,074.63 × 300,074.63
4. Step 4: Simplify right side
   140,195.81x = 90,044,780,568.89
5. Step 5: Solve for x
   x = 90,044,780,568.89/140,195.81
6. Step 6: Final answer
   x = 642,278.67