Finding the Third Proportional to 991,200 and 2,172,096

Step by Step Solution

1. Step 1: Write the proportion equation
   991,200 : 2,172,096 = 2,172,096 : x
2. Step 2: Convert to fraction form
   991,200/2,172,096 = 2,172,096/x
3. Step 3: Cross multiply
   991,200x = 2,172,096 × 2,172,096
4. Step 4: Simplify right side
   991,200x = 4,718,001,033,216
5. Step 5: Solve for x
   x = 4,718,001,033,216/991,200
6. Step 6: Final answer
   x = 4,759,888.05