Finding the Third Proportional to 1,209,290 and 2,639,632

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,290 : 2,639,632 = 2,639,632 : x
2. Step 2: Convert to fraction form
   1,209,290/2,639,632 = 2,639,632/x
3. Step 3: Cross multiply
   1,209,290x = 2,639,632 × 2,639,632
4. Step 4: Simplify right side
   1,209,290x = 6,967,657,095,424
5. Step 5: Solve for x
   x = 6,967,657,095,424/1,209,290
6. Step 6: Final answer
   x = 5,761,775.17