Finding the Third Proportional to 646,498 and 1,371,800

Step by Step Solution

1. Step 1: Write the proportion equation
   646,498 : 1,371,800 = 1,371,800 : x
2. Step 2: Convert to fraction form
   646,498/1,371,800 = 1,371,800/x
3. Step 3: Cross multiply
   646,498x = 1,371,800 × 1,371,800
4. Step 4: Simplify right side
   646,498x = 1,881,835,240,000
5. Step 5: Solve for x
   x = 1,881,835,240,000/646,498
6. Step 6: Final answer
   x = 2,910,813.71