Finding the Third Proportional to 1,215,698 and 2,637,460

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,698 : 2,637,460 = 2,637,460 : x
2. Step 2: Convert to fraction form
   1,215,698/2,637,460 = 2,637,460/x
3. Step 3: Cross multiply
   1,215,698x = 2,637,460 × 2,637,460
4. Step 4: Simplify right side
   1,215,698x = 6,956,195,251,600
5. Step 5: Solve for x
   x = 6,956,195,251,600/1,215,698
6. Step 6: Final answer
   x = 5,721,976.39