Finding the Third Proportional to 718,493.25 and 999,007.50

Step by Step Solution

1. Step 1: Write the proportion equation
   718,493.25 : 999,007.50 = 999,007.50 : x
2. Step 2: Convert to fraction form
   718,493.25/999,007.50 = 999,007.50/x
3. Step 3: Cross multiply
   718,493.25x = 999,007.50 × 999,007.50
4. Step 4: Simplify right side
   718,493.25x = 998,015,985,056.25
5. Step 5: Solve for x
   x = 998,015,985,056.25/718,493.25
6. Step 6: Final answer
   x = 1,389,040.17