Finding the Third Proportional to 3,805,563 and 5,218,456.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,805,563 : 5,218,456.50 = 5,218,456.50 : x
2. Step 2: Convert to fraction form
   3,805,563/5,218,456.50 = 5,218,456.50/x
3. Step 3: Cross multiply
   3,805,563x = 5,218,456.50 × 5,218,456.50
4. Step 4: Simplify right side
   3,805,563x = 27,232,288,242,392.25
5. Step 5: Solve for x
   x = 27,232,288,242,392.25/3,805,563
6. Step 6: Final answer
   x = 7,155,915.76