Finding the Third Proportional to 869,618 and 1,300,429

Step by Step Solution

1. Step 1: Write the proportion equation
   869,618 : 1,300,429 = 1,300,429 : x
2. Step 2: Convert to fraction form
   869,618/1,300,429 = 1,300,429/x
3. Step 3: Cross multiply
   869,618x = 1,300,429 × 1,300,429
4. Step 4: Simplify right side
   869,618x = 1,691,115,584,041
5. Step 5: Solve for x
   x = 1,691,115,584,041/869,618
6. Step 6: Final answer
   x = 1,944,664.88