Finding the Third Proportional to 1,209,222 and 2,639,492

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,222 : 2,639,492 = 2,639,492 : x
2. Step 2: Convert to fraction form
   1,209,222/2,639,492 = 2,639,492/x
3. Step 3: Cross multiply
   1,209,222x = 2,639,492 × 2,639,492
4. Step 4: Simplify right side
   1,209,222x = 6,966,918,018,064
5. Step 5: Solve for x
   x = 6,966,918,018,064/1,209,222
6. Step 6: Final answer
   x = 5,761,487.98