Finding the Third Proportional to 870,644 and 1,820,008

Step by Step Solution

1. Step 1: Write the proportion equation
   870,644 : 1,820,008 = 1,820,008 : x
2. Step 2: Convert to fraction form
   870,644/1,820,008 = 1,820,008/x
3. Step 3: Cross multiply
   870,644x = 1,820,008 × 1,820,008
4. Step 4: Simplify right side
   870,644x = 3,312,429,120,064
5. Step 5: Solve for x
   x = 3,312,429,120,064/870,644
6. Step 6: Final answer
   x = 3,804,573.53