Finding the Third Proportional to 1,939,694 and 4,215,130

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939,694 : 4,215,130 = 4,215,130 : x
2. Step 2: Convert to fraction form
   1,939,694/4,215,130 = 4,215,130/x
3. Step 3: Cross multiply
   1,939,694x = 4,215,130 × 4,215,130
4. Step 4: Simplify right side
   1,939,694x = 17,767,320,916,900
5. Step 5: Solve for x
   x = 17,767,320,916,900/1,939,694
6. Step 6: Final answer
   x = 9,159,857.65