Finding the Third Proportional to 1,215,698 and 2,645,454

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,698 : 2,645,454 = 2,645,454 : x
2. Step 2: Convert to fraction form
   1,215,698/2,645,454 = 2,645,454/x
3. Step 3: Cross multiply
   1,215,698x = 2,645,454 × 2,645,454
4. Step 4: Simplify right side
   1,215,698x = 6,998,426,866,116
5. Step 5: Solve for x
   x = 6,998,426,866,116/1,215,698
6. Step 6: Final answer
   x = 5,756,714.96