Finding the Third Proportional to 3,971,786 and 8,573,248

Step by Step Solution

1. Step 1: Write the proportion equation
   3,971,786 : 8,573,248 = 8,573,248 : x
2. Step 2: Convert to fraction form
   3,971,786/8,573,248 = 8,573,248/x
3. Step 3: Cross multiply
   3,971,786x = 8,573,248 × 8,573,248
4. Step 4: Simplify right side
   3,971,786x = 73,500,581,269,504
5. Step 5: Solve for x
   x = 73,500,581,269,504/3,971,786
6. Step 6: Final answer
   x = 18,505,675.10