Finding the Third Proportional to 2,100,152 and 4,580,419

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100,152 : 4,580,419 = 4,580,419 : x
2. Step 2: Convert to fraction form
   2,100,152/4,580,419 = 4,580,419/x
3. Step 3: Cross multiply
   2,100,152x = 4,580,419 × 4,580,419
4. Step 4: Simplify right side
   2,100,152x = 20,980,238,215,561
5. Step 5: Solve for x
   x = 20,980,238,215,561/2,100,152
6. Step 6: Final answer
   x = 9,989,866.55