Finding the Third Proportional to 688,185 and 1,619,352

Step by Step Solution

1. Step 1: Write the proportion equation
   688,185 : 1,619,352 = 1,619,352 : x
2. Step 2: Convert to fraction form
   688,185/1,619,352 = 1,619,352/x
3. Step 3: Cross multiply
   688,185x = 1,619,352 × 1,619,352
4. Step 4: Simplify right side
   688,185x = 2,622,300,899,904
5. Step 5: Solve for x
   x = 2,622,300,899,904/688,185
6. Step 6: Final answer
   x = 3,810,459.25