Finding the Third Proportional to 1,065,863 and 1,638,327

Step by Step Solution

1. Step 1: Write the proportion equation
   1,065,863 : 1,638,327 = 1,638,327 : x
2. Step 2: Convert to fraction form
   1,065,863/1,638,327 = 1,638,327/x
3. Step 3: Cross multiply
   1,065,863x = 1,638,327 × 1,638,327
4. Step 4: Simplify right side
   1,065,863x = 2,684,115,358,929
5. Step 5: Solve for x
   x = 2,684,115,358,929/1,065,863
6. Step 6: Final answer
   x = 2,518,255.50