Finding the Third Proportional to 456,897 and 990,066

Step by Step Solution

1. Step 1: Write the proportion equation
   456,897 : 990,066 = 990,066 : x
2. Step 2: Convert to fraction form
   456,897/990,066 = 990,066/x
3. Step 3: Cross multiply
   456,897x = 990,066 × 990,066
4. Step 4: Simplify right side
   456,897x = 980,230,684,356
5. Step 5: Solve for x
   x = 980,230,684,356/456,897
6. Step 6: Final answer
   x = 2,145,408.45