Finding the Third Proportional to 688,317 and 1,619,908

Step by Step Solution

1. Step 1: Write the proportion equation
   688,317 : 1,619,908 = 1,619,908 : x
2. Step 2: Convert to fraction form
   688,317/1,619,908 = 1,619,908/x
3. Step 3: Cross multiply
   688,317x = 1,619,908 × 1,619,908
4. Step 4: Simplify right side
   688,317x = 2,624,101,928,464
5. Step 5: Solve for x
   x = 2,624,101,928,464/688,317
6. Step 6: Final answer
   x = 3,812,345.08