Finding the Third Proportional to 260,818.50 and 556,084.50

Step by Step Solution

1. Step 1: Write the proportion equation
   260,818.50 : 556,084.50 = 556,084.50 : x
2. Step 2: Convert to fraction form
   260,818.50/556,084.50 = 556,084.50/x
3. Step 3: Cross multiply
   260,818.50x = 556,084.50 × 556,084.50
4. Step 4: Simplify right side
   260,818.50x = 309,229,971,140.25
5. Step 5: Solve for x
   x = 309,229,971,140.25/260,818.50
6. Step 6: Final answer
   x = 1,185,613.64