Finding the Third Proportional to 258,411 and 547,507.50

Step by Step Solution

1. Step 1: Write the proportion equation
   258,411 : 547,507.50 = 547,507.50 : x
2. Step 2: Convert to fraction form
   258,411/547,507.50 = 547,507.50/x
3. Step 3: Cross multiply
   258,411x = 547,507.50 × 547,507.50
4. Step 4: Simplify right side
   258,411x = 299,764,462,556.25
5. Step 5: Solve for x
   x = 299,764,462,556.25/258,411
6. Step 6: Final answer
   x = 1,160,029.81