Finding the Third Proportional to 148,774 and 309,582

Step by Step Solution

1. Step 1: Write the proportion equation
   148,774 : 309,582 = 309,582 : x
2. Step 2: Convert to fraction form
   148,774/309,582 = 309,582/x
3. Step 3: Cross multiply
   148,774x = 309,582 × 309,582
4. Step 4: Simplify right side
   148,774x = 95,841,014,724
5. Step 5: Solve for x
   x = 95,841,014,724/148,774
6. Step 6: Final answer
   x = 644,205.40