Finding the Third Proportional to 2,216,636 and 4,772,272

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216,636 : 4,772,272 = 4,772,272 : x
2. Step 2: Convert to fraction form
   2,216,636/4,772,272 = 4,772,272/x
3. Step 3: Cross multiply
   2,216,636x = 4,772,272 × 4,772,272
4. Step 4: Simplify right side
   2,216,636x = 22,774,580,041,984
5. Step 5: Solve for x
   x = 22,774,580,041,984/2,216,636
6. Step 6: Final answer
   x = 10,274,388.78