Finding the Third Proportional to 3,670,039 and 8,634,890

Step by Step Solution

1. Step 1: Write the proportion equation
   3,670,039 : 8,634,890 = 8,634,890 : x
2. Step 2: Convert to fraction form
   3,670,039/8,634,890 = 8,634,890/x
3. Step 3: Cross multiply
   3,670,039x = 8,634,890 × 8,634,890
4. Step 4: Simplify right side
   3,670,039x = 74,561,325,312,100
5. Step 5: Solve for x
   x = 74,561,325,312,100/3,670,039
6. Step 6: Final answer
   x = 20,316,221.52