Finding the Third Proportional to 1,921,459 and 4,158,481

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921,459 : 4,158,481 = 4,158,481 : x
2. Step 2: Convert to fraction form
   1,921,459/4,158,481 = 4,158,481/x
3. Step 3: Cross multiply
   1,921,459x = 4,158,481 × 4,158,481
4. Step 4: Simplify right side
   1,921,459x = 17,292,964,227,361
5. Step 5: Solve for x
   x = 17,292,964,227,361/1,921,459
6. Step 6: Final answer
   x = 8,999,913.21