Finding the Third Proportional to 688,904 and 1,086,168

Step by Step Solution

1. Step 1: Write the proportion equation
   688,904 : 1,086,168 = 1,086,168 : x
2. Step 2: Convert to fraction form
   688,904/1,086,168 = 1,086,168/x
3. Step 3: Cross multiply
   688,904x = 1,086,168 × 1,086,168
4. Step 4: Simplify right side
   688,904x = 1,179,760,924,224
5. Step 5: Solve for x
   x = 1,179,760,924,224/688,904
6. Step 6: Final answer
   x = 1,712,518.62