Finding the Third Proportional to 260,806.50 and 556,061.63

Step by Step Solution

1. Step 1: Write the proportion equation
   260,806.50 : 556,061.63 = 556,061.63 : x
2. Step 2: Convert to fraction form
   260,806.50/556,061.63 = 556,061.63/x
3. Step 3: Cross multiply
   260,806.50x = 556,061.63 × 556,061.63
4. Step 4: Simplify right side
   260,806.50x = 309,204,530,797.64
5. Step 5: Solve for x
   x = 309,204,530,797.64/260,806.50
6. Step 6: Final answer
   x = 1,185,570.65