Finding the Third Proportional to 689,409 and 1,029,942

Step by Step Solution

1. Step 1: Write the proportion equation
   689,409 : 1,029,942 = 1,029,942 : x
2. Step 2: Convert to fraction form
   689,409/1,029,942 = 1,029,942/x
3. Step 3: Cross multiply
   689,409x = 1,029,942 × 1,029,942
4. Step 4: Simplify right side
   689,409x = 1,060,780,523,364
5. Step 5: Solve for x
   x = 1,060,780,523,364/689,409
6. Step 6: Final answer
   x = 1,538,680.99