Finding the Third Proportional to 456,618 and 991,046

Step by Step Solution

1. Step 1: Write the proportion equation
   456,618 : 991,046 = 991,046 : x
2. Step 2: Convert to fraction form
   456,618/991,046 = 991,046/x
3. Step 3: Cross multiply
   456,618x = 991,046 × 991,046
4. Step 4: Simplify right side
   456,618x = 982,172,174,116
5. Step 5: Solve for x
   x = 982,172,174,116/456,618
6. Step 6: Final answer
   x = 2,150,971.21