Finding the Third Proportional to 664,216.50 and 1,375,693.50

Step by Step Solution

1. Step 1: Write the proportion equation
   664,216.50 : 1,375,693.50 = 1,375,693.50 : x
2. Step 2: Convert to fraction form
   664,216.50/1,375,693.50 = 1,375,693.50/x
3. Step 3: Cross multiply
   664,216.50x = 1,375,693.50 × 1,375,693.50
4. Step 4: Simplify right side
   664,216.50x = 1,892,532,605,942.25
5. Step 5: Solve for x
   x = 1,892,532,605,942.25/664,216.50
6. Step 6: Final answer
   x = 2,849,270.69