Finding the Third Proportional to 1,211,026 and 1,645,402

Step by Step Solution

1. Step 1: Write the proportion equation
   1,211,026 : 1,645,402 = 1,645,402 : x
2. Step 2: Convert to fraction form
   1,211,026/1,645,402 = 1,645,402/x
3. Step 3: Cross multiply
   1,211,026x = 1,645,402 × 1,645,402
4. Step 4: Simplify right side
   1,211,026x = 2,707,347,741,604
5. Step 5: Solve for x
   x = 2,707,347,741,604/1,211,026
6. Step 6: Final answer
   x = 2,235,581.85