Finding the Third Proportional to 141,698 and 309,748

Step by Step Solution

1. Step 1: Write the proportion equation
   141,698 : 309,748 = 309,748 : x
2. Step 2: Convert to fraction form
   141,698/309,748 = 309,748/x
3. Step 3: Cross multiply
   141,698x = 309,748 × 309,748
4. Step 4: Simplify right side
   141,698x = 95,943,823,504
5. Step 5: Solve for x
   x = 95,943,823,504/141,698
6. Step 6: Final answer
   x = 677,100.76