Finding the Third Proportional to 1,970,172 and 4,247,928

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970,172 : 4,247,928 = 4,247,928 : x
2. Step 2: Convert to fraction form
   1,970,172/4,247,928 = 4,247,928/x
3. Step 3: Cross multiply
   1,970,172x = 4,247,928 × 4,247,928
4. Step 4: Simplify right side
   1,970,172x = 18,044,892,293,184
5. Step 5: Solve for x
   x = 18,044,892,293,184/1,970,172
6. Step 6: Final answer
   x = 9,159,044.13