Finding the Third Proportional to 635,442 and 990,673.50

Step by Step Solution

1. Step 1: Write the proportion equation
   635,442 : 990,673.50 = 990,673.50 : x
2. Step 2: Convert to fraction form
   635,442/990,673.50 = 990,673.50/x
3. Step 3: Cross multiply
   635,442x = 990,673.50 × 990,673.50
4. Step 4: Simplify right side
   635,442x = 981,433,983,602.25
5. Step 5: Solve for x
   x = 981,433,983,602.25/635,442
6. Step 6: Final answer
   x = 1,544,490.27