Finding the Third Proportional to 689,912 and 1,030,612

Step by Step Solution

1. Step 1: Write the proportion equation
   689,912 : 1,030,612 = 1,030,612 : x
2. Step 2: Convert to fraction form
   689,912/1,030,612 = 1,030,612/x
3. Step 3: Cross multiply
   689,912x = 1,030,612 × 1,030,612
4. Step 4: Simplify right side
   689,912x = 1,062,161,094,544
5. Step 5: Solve for x
   x = 1,062,161,094,544/689,912
6. Step 6: Final answer
   x = 1,539,560.25