Finding the Third Proportional to 149,854.50 and 313,479

Step by Step Solution

1. Step 1: Write the proportion equation
   149,854.50 : 313,479 = 313,479 : x
2. Step 2: Convert to fraction form
   149,854.50/313,479 = 313,479/x
3. Step 3: Cross multiply
   149,854.50x = 313,479 × 313,479
4. Step 4: Simplify right side
   149,854.50x = 98,269,083,441
5. Step 5: Solve for x
   x = 98,269,083,441/149,854.50
6. Step 6: Final answer
   x = 655,763.31