Finding the Third Proportional to 619,423 and 1,371,503

Step by Step Solution

1. Step 1: Write the proportion equation
   619,423 : 1,371,503 = 1,371,503 : x
2. Step 2: Convert to fraction form
   619,423/1,371,503 = 1,371,503/x
3. Step 3: Cross multiply
   619,423x = 1,371,503 × 1,371,503
4. Step 4: Simplify right side
   619,423x = 1,881,020,479,009
5. Step 5: Solve for x
   x = 1,881,020,479,009/619,423
6. Step 6: Final answer
   x = 3,036,730.12