Finding the Third Proportional to 619,420 and 1,371,499

Step by Step Solution

1. Step 1: Write the proportion equation
   619,420 : 1,371,499 = 1,371,499 : x
2. Step 2: Convert to fraction form
   619,420/1,371,499 = 1,371,499/x
3. Step 3: Cross multiply
   619,420x = 1,371,499 × 1,371,499
4. Step 4: Simplify right side
   619,420x = 1,881,009,507,001
5. Step 5: Solve for x
   x = 1,881,009,507,001/619,420
6. Step 6: Final answer
   x = 3,036,727.11