Finding the Third Proportional to 1,039,810 and 2,161,316

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039,810 : 2,161,316 = 2,161,316 : x
2. Step 2: Convert to fraction form
   1,039,810/2,161,316 = 2,161,316/x
3. Step 3: Cross multiply
   1,039,810x = 2,161,316 × 2,161,316
4. Step 4: Simplify right side
   1,039,810x = 4,671,286,851,856
5. Step 5: Solve for x
   x = 4,671,286,851,856/1,039,810
6. Step 6: Final answer
   x = 4,492,442.71