Finding the Third Proportional to 1,011,265 and 2,172,609

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011,265 : 2,172,609 = 2,172,609 : x
2. Step 2: Convert to fraction form
   1,011,265/2,172,609 = 2,172,609/x
3. Step 3: Cross multiply
   1,011,265x = 2,172,609 × 2,172,609
4. Step 4: Simplify right side
   1,011,265x = 4,720,229,866,881
5. Step 5: Solve for x
   x = 4,720,229,866,881/1,011,265
6. Step 6: Final answer
   x = 4,667,648.80