Finding the Third Proportional to 677,514 and 990,823.50

Step by Step Solution

1. Step 1: Write the proportion equation
   677,514 : 990,823.50 = 990,823.50 : x
2. Step 2: Convert to fraction form
   677,514/990,823.50 = 990,823.50/x
3. Step 3: Cross multiply
   677,514x = 990,823.50 × 990,823.50
4. Step 4: Simplify right side
   677,514x = 981,731,208,152.25
5. Step 5: Solve for x
   x = 981,731,208,152.25/677,514
6. Step 6: Final answer
   x = 1,449,019.81