Finding the Third Proportional to 688,738 and 1,499,458

Step by Step Solution

1. Step 1: Write the proportion equation
   688,738 : 1,499,458 = 1,499,458 : x
2. Step 2: Convert to fraction form
   688,738/1,499,458 = 1,499,458/x
3. Step 3: Cross multiply
   688,738x = 1,499,458 × 1,499,458
4. Step 4: Simplify right side
   688,738x = 2,248,374,293,764
5. Step 5: Solve for x
   x = 2,248,374,293,764/688,738
6. Step 6: Final answer
   x = 3,264,484.16