Finding the Third Proportional to 260,811 and 556,069.50

Step by Step Solution

1. Step 1: Write the proportion equation
   260,811 : 556,069.50 = 556,069.50 : x
2. Step 2: Convert to fraction form
   260,811/556,069.50 = 556,069.50/x
3. Step 3: Cross multiply
   260,811x = 556,069.50 × 556,069.50
4. Step 4: Simplify right side
   260,811x = 309,213,288,830.25
5. Step 5: Solve for x
   x = 309,213,288,830.25/260,811
6. Step 6: Final answer
   x = 1,185,583.77