Finding the Third Proportional to 462,609 and 725,861.25

Step by Step Solution

1. Step 1: Write the proportion equation
   462,609 : 725,861.25 = 725,861.25 : x
2. Step 2: Convert to fraction form
   462,609/725,861.25 = 725,861.25/x
3. Step 3: Cross multiply
   462,609x = 725,861.25 × 725,861.25
4. Step 4: Simplify right side
   462,609x = 526,874,554,251.56
5. Step 5: Solve for x
   x = 526,874,554,251.56/462,609
6. Step 6: Final answer
   x = 1,138,919.81