Finding the Third Proportional to 1,220,540 and 2,658,060

Step by Step Solution

1. Step 1: Write the proportion equation
   1,220,540 : 2,658,060 = 2,658,060 : x
2. Step 2: Convert to fraction form
   1,220,540/2,658,060 = 2,658,060/x
3. Step 3: Cross multiply
   1,220,540x = 2,658,060 × 2,658,060
4. Step 4: Simplify right side
   1,220,540x = 7,065,282,963,600
5. Step 5: Solve for x
   x = 7,065,282,963,600/1,220,540
6. Step 6: Final answer
   x = 5,788,653.35