Finding the Third Proportional to 663,404 and 994,062.50

Step by Step Solution

1. Step 1: Write the proportion equation
   663,404 : 994,062.50 = 994,062.50 : x
2. Step 2: Convert to fraction form
   663,404/994,062.50 = 994,062.50/x
3. Step 3: Cross multiply
   663,404x = 994,062.50 × 994,062.50
4. Step 4: Simplify right side
   663,404x = 988,160,253,906.25
5. Step 5: Solve for x
   x = 988,160,253,906.25/663,404
6. Step 6: Final answer
   x = 1,489,530.14