Finding the Third Proportional to 661,498 and 1,051,311

Step by Step Solution

1. Step 1: Write the proportion equation
   661,498 : 1,051,311 = 1,051,311 : x
2. Step 2: Convert to fraction form
   661,498/1,051,311 = 1,051,311/x
3. Step 3: Cross multiply
   661,498x = 1,051,311 × 1,051,311
4. Step 4: Simplify right side
   661,498x = 1,105,254,818,721
5. Step 5: Solve for x
   x = 1,105,254,818,721/661,498
6. Step 6: Final answer
   x = 1,670,836.22