Finding the Third Proportional to 905,330 and 1,991,444

Step by Step Solution

1. Step 1: Write the proportion equation
   905,330 : 1,991,444 = 1,991,444 : x
2. Step 2: Convert to fraction form
   905,330/1,991,444 = 1,991,444/x
3. Step 3: Cross multiply
   905,330x = 1,991,444 × 1,991,444
4. Step 4: Simplify right side
   905,330x = 3,965,849,205,136
5. Step 5: Solve for x
   x = 3,965,849,205,136/905,330
6. Step 6: Final answer
   x = 4,380,556.49