Finding the Third Proportional to 455,038.50 and 990,783

Step by Step Solution

1. Step 1: Write the proportion equation
   455,038.50 : 990,783 = 990,783 : x
2. Step 2: Convert to fraction form
   455,038.50/990,783 = 990,783/x
3. Step 3: Cross multiply
   455,038.50x = 990,783 × 990,783
4. Step 4: Simplify right side
   455,038.50x = 981,650,953,089
5. Step 5: Solve for x
   x = 981,650,953,089/455,038.50
6. Step 6: Final answer
   x = 2,157,292.08