Finding the Third Proportional to 828,902 and 1,216,155

Step by Step Solution

1. Step 1: Write the proportion equation
   828,902 : 1,216,155 = 1,216,155 : x
2. Step 2: Convert to fraction form
   828,902/1,216,155 = 1,216,155/x
3. Step 3: Cross multiply
   828,902x = 1,216,155 × 1,216,155
4. Step 4: Simplify right side
   828,902x = 1,479,032,984,025
5. Step 5: Solve for x
   x = 1,479,032,984,025/828,902
6. Step 6: Final answer
   x = 1,784,327.92