Finding the Third Proportional to 825,640 and 1,818,887

Step by Step Solution

1. Step 1: Write the proportion equation
   825,640 : 1,818,887 = 1,818,887 : x
2. Step 2: Convert to fraction form
   825,640/1,818,887 = 1,818,887/x
3. Step 3: Cross multiply
   825,640x = 1,818,887 × 1,818,887
4. Step 4: Simplify right side
   825,640x = 3,308,349,918,769
5. Step 5: Solve for x
   x = 3,308,349,918,769/825,640
6. Step 6: Final answer
   x = 4,007,012.64