Finding the Third Proportional to 869,010 and 1,272,405

Step by Step Solution

1. Step 1: Write the proportion equation
   869,010 : 1,272,405 = 1,272,405 : x
2. Step 2: Convert to fraction form
   869,010/1,272,405 = 1,272,405/x
3. Step 3: Cross multiply
   869,010x = 1,272,405 × 1,272,405
4. Step 4: Simplify right side
   869,010x = 1,619,014,484,025
5. Step 5: Solve for x
   x = 1,619,014,484,025/869,010
6. Step 6: Final answer
   x = 1,863,056.22