Finding the Third Proportional to 456,898.50 and 990,067.50

Step by Step Solution

1. Step 1: Write the proportion equation
   456,898.50 : 990,067.50 = 990,067.50 : x
2. Step 2: Convert to fraction form
   456,898.50/990,067.50 = 990,067.50/x
3. Step 3: Cross multiply
   456,898.50x = 990,067.50 × 990,067.50
4. Step 4: Simplify right side
   456,898.50x = 980,233,654,556.25
5. Step 5: Solve for x
   x = 980,233,654,556.25/456,898.50
6. Step 6: Final answer
   x = 2,145,407.91