Finding the Third Proportional to 521,391 and 1,142,442

Step by Step Solution

1. Step 1: Write the proportion equation
   521,391 : 1,142,442 = 1,142,442 : x
2. Step 2: Convert to fraction form
   521,391/1,142,442 = 1,142,442/x
3. Step 3: Cross multiply
   521,391x = 1,142,442 × 1,142,442
4. Step 4: Simplify right side
   521,391x = 1,305,173,723,364
5. Step 5: Solve for x
   x = 1,305,173,723,364/521,391
6. Step 6: Final answer
   x = 2,503,253.27