Finding the Third Proportional to 640,887 and 1,364,610

Step by Step Solution

1. Step 1: Write the proportion equation
   640,887 : 1,364,610 = 1,364,610 : x
2. Step 2: Convert to fraction form
   640,887/1,364,610 = 1,364,610/x
3. Step 3: Cross multiply
   640,887x = 1,364,610 × 1,364,610
4. Step 4: Simplify right side
   640,887x = 1,862,160,452,100
5. Step 5: Solve for x
   x = 1,862,160,452,100/640,887
6. Step 6: Final answer
   x = 2,905,598.73