Finding the Third Proportional to 1,780,659 and 4,199,217

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780,659 : 4,199,217 = 4,199,217 : x
2. Step 2: Convert to fraction form
   1,780,659/4,199,217 = 4,199,217/x
3. Step 3: Cross multiply
   1,780,659x = 4,199,217 × 4,199,217
4. Step 4: Simplify right side
   1,780,659x = 17,633,423,413,089
5. Step 5: Solve for x
   x = 17,633,423,413,089/1,780,659
6. Step 6: Final answer
   x = 9,902,751.40