Finding the Third Proportional to 141,742 and 308,390

Step by Step Solution

1. Step 1: Write the proportion equation
   141,742 : 308,390 = 308,390 : x
2. Step 2: Convert to fraction form
   141,742/308,390 = 308,390/x
3. Step 3: Cross multiply
   141,742x = 308,390 × 308,390
4. Step 4: Simplify right side
   141,742x = 95,104,392,100
5. Step 5: Solve for x
   x = 95,104,392,100/141,742
6. Step 6: Final answer
   x = 670,968.32