Finding the Third Proportional to 663,422.50 and 994,091.25

Step by Step Solution

1. Step 1: Write the proportion equation
   663,422.50 : 994,091.25 = 994,091.25 : x
2. Step 2: Convert to fraction form
   663,422.50/994,091.25 = 994,091.25/x
3. Step 3: Cross multiply
   663,422.50x = 994,091.25 × 994,091.25
4. Step 4: Simplify right side
   663,422.50x = 988,217,413,326.56
5. Step 5: Solve for x
   x = 988,217,413,326.56/663,422.50
6. Step 6: Final answer
   x = 1,489,574.76