Finding the Third Proportional to 258,318 and 547,366.50

Step by Step Solution

1. Step 1: Write the proportion equation
   258,318 : 547,366.50 = 547,366.50 : x
2. Step 2: Convert to fraction form
   258,318/547,366.50 = 547,366.50/x
3. Step 3: Cross multiply
   258,318x = 547,366.50 × 547,366.50
4. Step 4: Simplify right side
   258,318x = 299,610,085,322.25
5. Step 5: Solve for x
   x = 299,610,085,322.25/258,318
6. Step 6: Final answer
   x = 1,159,849.82