Finding the Third Proportional to 816,700 and 1,311,150

Step by Step Solution

1. Step 1: Write the proportion equation
   816,700 : 1,311,150 = 1,311,150 : x
2. Step 2: Convert to fraction form
   816,700/1,311,150 = 1,311,150/x
3. Step 3: Cross multiply
   816,700x = 1,311,150 × 1,311,150
4. Step 4: Simplify right side
   816,700x = 1,719,114,322,500
5. Step 5: Solve for x
   x = 1,719,114,322,500/816,700
6. Step 6: Final answer
   x = 2,104,952.03