Finding the Third Proportional to 619,839 and 1,358,505

Step by Step Solution

1. Step 1: Write the proportion equation
   619,839 : 1,358,505 = 1,358,505 : x
2. Step 2: Convert to fraction form
   619,839/1,358,505 = 1,358,505/x
3. Step 3: Cross multiply
   619,839x = 1,358,505 × 1,358,505
4. Step 4: Simplify right side
   619,839x = 1,845,535,835,025
5. Step 5: Solve for x
   x = 1,845,535,835,025/619,839
6. Step 6: Final answer
   x = 2,977,443.88