Finding the Third Proportional to 689,912 and 1,030,608

Step by Step Solution

1. Step 1: Write the proportion equation
   689,912 : 1,030,608 = 1,030,608 : x
2. Step 2: Convert to fraction form
   689,912/1,030,608 = 1,030,608/x
3. Step 3: Cross multiply
   689,912x = 1,030,608 × 1,030,608
4. Step 4: Simplify right side
   689,912x = 1,062,152,849,664
5. Step 5: Solve for x
   x = 1,062,152,849,664/689,912
6. Step 6: Final answer
   x = 1,539,548.30