Finding the Third Proportional to 609,420 and 1,410,615

Step by Step Solution

1. Step 1: Write the proportion equation
   609,420 : 1,410,615 = 1,410,615 : x
2. Step 2: Convert to fraction form
   609,420/1,410,615 = 1,410,615/x
3. Step 3: Cross multiply
   609,420x = 1,410,615 × 1,410,615
4. Step 4: Simplify right side
   609,420x = 1,989,834,678,225
5. Step 5: Solve for x
   x = 1,989,834,678,225/609,420
6. Step 6: Final answer
   x = 3,265,128.61