Finding the Third Proportional to 828,897 and 1,216,143

Step by Step Solution

1. Step 1: Write the proportion equation
   828,897 : 1,216,143 = 1,216,143 : x
2. Step 2: Convert to fraction form
   828,897/1,216,143 = 1,216,143/x
3. Step 3: Cross multiply
   828,897x = 1,216,143 × 1,216,143
4. Step 4: Simplify right side
   828,897x = 1,479,003,796,449
5. Step 5: Solve for x
   x = 1,479,003,796,449/828,897
6. Step 6: Final answer
   x = 1,784,303.47