Finding the Third Proportional to 811,199 and 1,272,470

Step by Step Solution

1. Step 1: Write the proportion equation
   811,199 : 1,272,470 = 1,272,470 : x
2. Step 2: Convert to fraction form
   811,199/1,272,470 = 1,272,470/x
3. Step 3: Cross multiply
   811,199x = 1,272,470 × 1,272,470
4. Step 4: Simplify right side
   811,199x = 1,619,179,900,900
5. Step 5: Solve for x
   x = 1,619,179,900,900/811,199
6. Step 6: Final answer
   x = 1,996,032.91