Finding the Third Proportional to 878,020 and 1,780,262

Step by Step Solution

1. Step 1: Write the proportion equation
   878,020 : 1,780,262 = 1,780,262 : x
2. Step 2: Convert to fraction form
   878,020/1,780,262 = 1,780,262/x
3. Step 3: Cross multiply
   878,020x = 1,780,262 × 1,780,262
4. Step 4: Simplify right side
   878,020x = 3,169,332,788,644
5. Step 5: Solve for x
   x = 3,169,332,788,644/878,020
6. Step 6: Final answer
   x = 3,609,636.21