Finding the Third Proportional to 1,020,573 and 2,139,561

Step by Step Solution

1. Step 1: Write the proportion equation
   1,020,573 : 2,139,561 = 2,139,561 : x
2. Step 2: Convert to fraction form
   1,020,573/2,139,561 = 2,139,561/x
3. Step 3: Cross multiply
   1,020,573x = 2,139,561 × 2,139,561
4. Step 4: Simplify right side
   1,020,573x = 4,577,721,272,721
5. Step 5: Solve for x
   x = 4,577,721,272,721/1,020,573
6. Step 6: Final answer
   x = 4,485,442.27