Finding the Third Proportional to 721,010 and 1,669,091

Step by Step Solution

1. Step 1: Write the proportion equation
   721,010 : 1,669,091 = 1,669,091 : x
2. Step 2: Convert to fraction form
   721,010/1,669,091 = 1,669,091/x
3. Step 3: Cross multiply
   721,010x = 1,669,091 × 1,669,091
4. Step 4: Simplify right side
   721,010x = 2,785,864,766,281
5. Step 5: Solve for x
   x = 2,785,864,766,281/721,010
6. Step 6: Final answer
   x = 3,863,836.52