Finding the Third Proportional to 641,650 and 897,040

Step by Step Solution

1. Step 1: Write the proportion equation
   641,650 : 897,040 = 897,040 : x
2. Step 2: Convert to fraction form
   641,650/897,040 = 897,040/x
3. Step 3: Cross multiply
   641,650x = 897,040 × 897,040
4. Step 4: Simplify right side
   641,650x = 804,680,761,600
5. Step 5: Solve for x
   x = 804,680,761,600/641,650
6. Step 6: Final answer
   x = 1,254,080.51