Finding the Third Proportional to 1,985,913 and 4,242,928

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985,913 : 4,242,928 = 4,242,928 : x
2. Step 2: Convert to fraction form
   1,985,913/4,242,928 = 4,242,928/x
3. Step 3: Cross multiply
   1,985,913x = 4,242,928 × 4,242,928
4. Step 4: Simplify right side
   1,985,913x = 18,002,438,013,184
5. Step 5: Solve for x
   x = 18,002,438,013,184/1,985,913
6. Step 6: Final answer
   x = 9,065,068.82