Finding the Third Proportional to 1,209,132 and 2,639,312

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,132 : 2,639,312 = 2,639,312 : x
2. Step 2: Convert to fraction form
   1,209,132/2,639,312 = 2,639,312/x
3. Step 3: Cross multiply
   1,209,132x = 2,639,312 × 2,639,312
4. Step 4: Simplify right side
   1,209,132x = 6,965,967,833,344
5. Step 5: Solve for x
   x = 6,965,967,833,344/1,209,132
6. Step 6: Final answer
   x = 5,761,130.99