Finding the Third Proportional to 3,946,894 and 8,502,872

Step by Step Solution

1. Step 1: Write the proportion equation
   3,946,894 : 8,502,872 = 8,502,872 : x
2. Step 2: Convert to fraction form
   3,946,894/8,502,872 = 8,502,872/x
3. Step 3: Cross multiply
   3,946,894x = 8,502,872 × 8,502,872
4. Step 4: Simplify right side
   3,946,894x = 72,298,832,248,384
5. Step 5: Solve for x
   x = 72,298,832,248,384/3,946,894
6. Step 6: Final answer
   x = 18,317,905.74