Finding the Third Proportional to 623,486 and 1,340,210

Step by Step Solution

1. Step 1: Write the proportion equation
   623,486 : 1,340,210 = 1,340,210 : x
2. Step 2: Convert to fraction form
   623,486/1,340,210 = 1,340,210/x
3. Step 3: Cross multiply
   623,486x = 1,340,210 × 1,340,210
4. Step 4: Simplify right side
   623,486x = 1,796,162,844,100
5. Step 5: Solve for x
   x = 1,796,162,844,100/623,486
6. Step 6: Final answer
   x = 2,880,839.10