Finding the Third Proportional to 3,426,642 and 8,117,901

Step by Step Solution

1. Step 1: Write the proportion equation
   3,426,642 : 8,117,901 = 8,117,901 : x
2. Step 2: Convert to fraction form
   3,426,642/8,117,901 = 8,117,901/x
3. Step 3: Cross multiply
   3,426,642x = 8,117,901 × 8,117,901
4. Step 4: Simplify right side
   3,426,642x = 65,900,316,645,801
5. Step 5: Solve for x
   x = 65,900,316,645,801/3,426,642
6. Step 6: Final answer
   x = 19,231,748.35