Finding the Third Proportional to 2,100,185 and 4,580,480

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100,185 : 4,580,480 = 4,580,480 : x
2. Step 2: Convert to fraction form
   2,100,185/4,580,480 = 4,580,480/x
3. Step 3: Cross multiply
   2,100,185x = 4,580,480 × 4,580,480
4. Step 4: Simplify right side
   2,100,185x = 20,980,797,030,400
5. Step 5: Solve for x
   x = 20,980,797,030,400/2,100,185
6. Step 6: Final answer
   x = 9,989,975.66