Finding the Third Proportional to 521,385 and 1,142,427

Step by Step Solution

1. Step 1: Write the proportion equation
   521,385 : 1,142,427 = 1,142,427 : x
2. Step 2: Convert to fraction form
   521,385/1,142,427 = 1,142,427/x
3. Step 3: Cross multiply
   521,385x = 1,142,427 × 1,142,427
4. Step 4: Simplify right side
   521,385x = 1,305,139,450,329
5. Step 5: Solve for x
   x = 1,305,139,450,329/521,385
6. Step 6: Final answer
   x = 2,503,216.34