Finding the Third Proportional to 621,306 and 1,340,468

Step by Step Solution

1. Step 1: Write the proportion equation
   621,306 : 1,340,468 = 1,340,468 : x
2. Step 2: Convert to fraction form
   621,306/1,340,468 = 1,340,468/x
3. Step 3: Cross multiply
   621,306x = 1,340,468 × 1,340,468
4. Step 4: Simplify right side
   621,306x = 1,796,854,459,024
5. Step 5: Solve for x
   x = 1,796,854,459,024/621,306
6. Step 6: Final answer
   x = 2,892,060.37