Finding the Third Proportional to 173,114.72 and 258,980.10

Step by Step Solution

1. Step 1: Write the proportion equation
   173,114.72 : 258,980.10 = 258,980.10 : x
2. Step 2: Convert to fraction form
   173,114.72/258,980.10 = 258,980.10/x
3. Step 3: Cross multiply
   173,114.72x = 258,980.10 × 258,980.10
4. Step 4: Simplify right side
   173,114.72x = 67,070,690,982.04
5. Step 5: Solve for x
   x = 67,070,690,982.04/173,114.72
6. Step 6: Final answer
   x = 387,434.94