Finding the Third Proportional to 2,151,551 and 4,681,642

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151,551 : 4,681,642 = 4,681,642 : x
2. Step 2: Convert to fraction form
   2,151,551/4,681,642 = 4,681,642/x
3. Step 3: Cross multiply
   2,151,551x = 4,681,642 × 4,681,642
4. Step 4: Simplify right side
   2,151,551x = 21,917,771,816,164
5. Step 5: Solve for x
   x = 21,917,771,816,164/2,151,551
6. Step 6: Final answer
   x = 10,186,963.64