Finding the Third Proportional to 869,012 and 1,272,408.50

Step by Step Solution

1. Step 1: Write the proportion equation
   869,012 : 1,272,408.50 = 1,272,408.50 : x
2. Step 2: Convert to fraction form
   869,012/1,272,408.50 = 1,272,408.50/x
3. Step 3: Cross multiply
   869,012x = 1,272,408.50 × 1,272,408.50
4. Step 4: Simplify right side
   869,012x = 1,619,023,390,872.25
5. Step 5: Solve for x
   x = 1,619,023,390,872.25/869,012
6. Step 6: Final answer
   x = 1,863,062.18