Finding the Third Proportional to 2,158,407 and 4,615,893

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,407 : 4,615,893 = 4,615,893 : x
2. Step 2: Convert to fraction form
   2,158,407/4,615,893 = 4,615,893/x
3. Step 3: Cross multiply
   2,158,407x = 4,615,893 × 4,615,893
4. Step 4: Simplify right side
   2,158,407x = 21,306,468,187,449
5. Step 5: Solve for x
   x = 21,306,468,187,449/2,158,407
6. Step 6: Final answer
   x = 9,871,385.79