Finding the Third Proportional to 264,465 and 581,411.25

Step by Step Solution

1. Step 1: Write the proportion equation
   264,465 : 581,411.25 = 581,411.25 : x
2. Step 2: Convert to fraction form
   264,465/581,411.25 = 581,411.25/x
3. Step 3: Cross multiply
   264,465x = 581,411.25 × 581,411.25
4. Step 4: Simplify right side
   264,465x = 338,039,041,626.56
5. Step 5: Solve for x
   x = 338,039,041,626.56/264,465
6. Step 6: Final answer
   x = 1,278,199.54