Finding the Third Proportional to 642,269 and 1,518,912

Step by Step Solution

1. Step 1: Write the proportion equation
   642,269 : 1,518,912 = 1,518,912 : x
2. Step 2: Convert to fraction form
   642,269/1,518,912 = 1,518,912/x
3. Step 3: Cross multiply
   642,269x = 1,518,912 × 1,518,912
4. Step 4: Simplify right side
   642,269x = 2,307,093,663,744
5. Step 5: Solve for x
   x = 2,307,093,663,744/642,269
6. Step 6: Final answer
   x = 3,592,098.74