Finding the Third Proportional to 3,861,588 and 8,321,208

Step by Step Solution

1. Step 1: Write the proportion equation
   3,861,588 : 8,321,208 = 8,321,208 : x
2. Step 2: Convert to fraction form
   3,861,588/8,321,208 = 8,321,208/x
3. Step 3: Cross multiply
   3,861,588x = 8,321,208 × 8,321,208
4. Step 4: Simplify right side
   3,861,588x = 69,242,502,579,264
5. Step 5: Solve for x
   x = 69,242,502,579,264/3,861,588
6. Step 6: Final answer
   x = 17,931,095.34