Finding the Third Proportional to 3,971,246 and 8,670,763

Step by Step Solution

1. Step 1: Write the proportion equation
   3,971,246 : 8,670,763 = 8,670,763 : x
2. Step 2: Convert to fraction form
   3,971,246/8,670,763 = 8,670,763/x
3. Step 3: Cross multiply
   3,971,246x = 8,670,763 × 8,670,763
4. Step 4: Simplify right side
   3,971,246x = 75,182,131,002,169
5. Step 5: Solve for x
   x = 75,182,131,002,169/3,971,246
6. Step 6: Final answer
   x = 18,931,622.72