Finding the Third Proportional to 258,513 and 546,832.50

Step by Step Solution

1. Step 1: Write the proportion equation
   258,513 : 546,832.50 = 546,832.50 : x
2. Step 2: Convert to fraction form
   258,513/546,832.50 = 546,832.50/x
3. Step 3: Cross multiply
   258,513x = 546,832.50 × 546,832.50
4. Step 4: Simplify right side
   258,513x = 299,025,783,056.25
5. Step 5: Solve for x
   x = 299,025,783,056.25/258,513
6. Step 6: Final answer
   x = 1,156,714.68