Finding the Third Proportional to 607,990 and 908,582

Step by Step Solution

1. Step 1: Write the proportion equation
   607,990 : 908,582 = 908,582 : x
2. Step 2: Convert to fraction form
   607,990/908,582 = 908,582/x
3. Step 3: Cross multiply
   607,990x = 908,582 × 908,582
4. Step 4: Simplify right side
   607,990x = 825,521,250,724
5. Step 5: Solve for x
   x = 825,521,250,724/607,990
6. Step 6: Final answer
   x = 1,357,787.55