Finding the Third Proportional to 1,780,686 and 4,199,316

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780,686 : 4,199,316 = 4,199,316 : x
2. Step 2: Convert to fraction form
   1,780,686/4,199,316 = 4,199,316/x
3. Step 3: Cross multiply
   1,780,686x = 4,199,316 × 4,199,316
4. Step 4: Simplify right side
   1,780,686x = 17,634,254,867,856
5. Step 5: Solve for x
   x = 17,634,254,867,856/1,780,686
6. Step 6: Final answer
   x = 9,903,068.18