Finding the Third Proportional to 1,000,440 and 2,190,618

Step by Step Solution

1. Step 1: Write the proportion equation
   1,000,440 : 2,190,618 = 2,190,618 : x
2. Step 2: Convert to fraction form
   1,000,440/2,190,618 = 2,190,618/x
3. Step 3: Cross multiply
   1,000,440x = 2,190,618 × 2,190,618
4. Step 4: Simplify right side
   1,000,440x = 4,798,807,221,924
5. Step 5: Solve for x
   x = 4,798,807,221,924/1,000,440
6. Step 6: Final answer
   x = 4,796,696.68