Finding the Third Proportional to 699,888 and 1,085,800

Step by Step Solution

1. Step 1: Write the proportion equation
   699,888 : 1,085,800 = 1,085,800 : x
2. Step 2: Convert to fraction form
   699,888/1,085,800 = 1,085,800/x
3. Step 3: Cross multiply
   699,888x = 1,085,800 × 1,085,800
4. Step 4: Simplify right side
   699,888x = 1,178,961,640,000
5. Step 5: Solve for x
   x = 1,178,961,640,000/699,888
6. Step 6: Final answer
   x = 1,684,500.43