Finding the Third Proportional to 1,215,622 and 2,645,300

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,622 : 2,645,300 = 2,645,300 : x
2. Step 2: Convert to fraction form
   1,215,622/2,645,300 = 2,645,300/x
3. Step 3: Cross multiply
   1,215,622x = 2,645,300 × 2,645,300
4. Step 4: Simplify right side
   1,215,622x = 6,997,612,090,000
5. Step 5: Solve for x
   x = 6,997,612,090,000/1,215,622
6. Step 6: Final answer
   x = 5,756,404.61