Finding the Third Proportional to 718,524 and 999,040.50

Step by Step Solution

1. Step 1: Write the proportion equation
   718,524 : 999,040.50 = 999,040.50 : x
2. Step 2: Convert to fraction form
   718,524/999,040.50 = 999,040.50/x
3. Step 3: Cross multiply
   718,524x = 999,040.50 × 999,040.50
4. Step 4: Simplify right side
   718,524x = 998,081,920,640.25
5. Step 5: Solve for x
   x = 998,081,920,640.25/718,524
6. Step 6: Final answer
   x = 1,389,072.49