Finding the Third Proportional to 689,358 and 1,034,766

Step by Step Solution

1. Step 1: Write the proportion equation
   689,358 : 1,034,766 = 1,034,766 : x
2. Step 2: Convert to fraction form
   689,358/1,034,766 = 1,034,766/x
3. Step 3: Cross multiply
   689,358x = 1,034,766 × 1,034,766
4. Step 4: Simplify right side
   689,358x = 1,070,740,674,756
5. Step 5: Solve for x
   x = 1,070,740,674,756/689,358
6. Step 6: Final answer
   x = 1,553,243.27