Finding the Third Proportional to 688,581 and 1,491,507

Step by Step Solution

1. Step 1: Write the proportion equation
   688,581 : 1,491,507 = 1,491,507 : x
2. Step 2: Convert to fraction form
   688,581/1,491,507 = 1,491,507/x
3. Step 3: Cross multiply
   688,581x = 1,491,507 × 1,491,507
4. Step 4: Simplify right side
   688,581x = 2,224,593,131,049
5. Step 5: Solve for x
   x = 2,224,593,131,049/688,581
6. Step 6: Final answer
   x = 3,230,692.00