Finding the Third Proportional to 356,481 and 556,591.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,481 : 556,591.50 = 556,591.50 : x
2. Step 2: Convert to fraction form
   356,481/556,591.50 = 556,591.50/x
3. Step 3: Cross multiply
   356,481x = 556,591.50 × 556,591.50
4. Step 4: Simplify right side
   356,481x = 309,794,097,872.25
5. Step 5: Solve for x
   x = 309,794,097,872.25/356,481
6. Step 6: Final answer
   x = 869,033.97