Finding the Third Proportional to 1,221,642 and 1,864,053

Step by Step Solution

1. Step 1: Write the proportion equation
   1,221,642 : 1,864,053 = 1,864,053 : x
2. Step 2: Convert to fraction form
   1,221,642/1,864,053 = 1,864,053/x
3. Step 3: Cross multiply
   1,221,642x = 1,864,053 × 1,864,053
4. Step 4: Simplify right side
   1,221,642x = 3,474,693,586,809
5. Step 5: Solve for x
   x = 3,474,693,586,809/1,221,642
6. Step 6: Final answer
   x = 2,844,281.37