Finding the Third Proportional to 1,059,210 and 1,620,603

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059,210 : 1,620,603 = 1,620,603 : x
2. Step 2: Convert to fraction form
   1,059,210/1,620,603 = 1,620,603/x
3. Step 3: Cross multiply
   1,059,210x = 1,620,603 × 1,620,603
4. Step 4: Simplify right side
   1,059,210x = 2,626,354,083,609
5. Step 5: Solve for x
   x = 2,626,354,083,609/1,059,210
6. Step 6: Final answer
   x = 2,479,540.49