Finding the Third Proportional to 815,801 and 1,761,321

Step by Step Solution

1. Step 1: Write the proportion equation
   815,801 : 1,761,321 = 1,761,321 : x
2. Step 2: Convert to fraction form
   815,801/1,761,321 = 1,761,321/x
3. Step 3: Cross multiply
   815,801x = 1,761,321 × 1,761,321
4. Step 4: Simplify right side
   815,801x = 3,102,251,665,041
5. Step 5: Solve for x
   x = 3,102,251,665,041/815,801
6. Step 6: Final answer
   x = 3,802,706.38