Finding the Third Proportional to 3,805,565 and 5,218,459

Step by Step Solution

1. Step 1: Write the proportion equation
   3,805,565 : 5,218,459 = 5,218,459 : x
2. Step 2: Convert to fraction form
   3,805,565/5,218,459 = 5,218,459/x
3. Step 3: Cross multiply
   3,805,565x = 5,218,459 × 5,218,459
4. Step 4: Simplify right side
   3,805,565x = 27,232,314,334,681
5. Step 5: Solve for x
   x = 27,232,314,334,681/3,805,565
6. Step 6: Final answer
   x = 7,155,918.85