Finding the Third Proportional to 1,780,742 and 4,199,387

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780,742 : 4,199,387 = 4,199,387 : x
2. Step 2: Convert to fraction form
   1,780,742/4,199,387 = 4,199,387/x
3. Step 3: Cross multiply
   1,780,742x = 4,199,387 × 4,199,387
4. Step 4: Simplify right side
   1,780,742x = 17,634,851,175,769
5. Step 5: Solve for x
   x = 17,634,851,175,769/1,780,742
6. Step 6: Final answer
   x = 9,903,091.62