Finding the Third Proportional to 718,530 and 999,049.50

Step by Step Solution

1. Step 1: Write the proportion equation
   718,530 : 999,049.50 = 999,049.50 : x
2. Step 2: Convert to fraction form
   718,530/999,049.50 = 999,049.50/x
3. Step 3: Cross multiply
   718,530x = 999,049.50 × 999,049.50
4. Step 4: Simplify right side
   718,530x = 998,099,903,450.25
5. Step 5: Solve for x
   x = 998,099,903,450.25/718,530
6. Step 6: Final answer
   x = 1,389,085.92