Finding the Third Proportional to 108,564 and 172,318.50

Step by Step Solution

1. Step 1: Write the proportion equation
   108,564 : 172,318.50 = 172,318.50 : x
2. Step 2: Convert to fraction form
   108,564/172,318.50 = 172,318.50/x
3. Step 3: Cross multiply
   108,564x = 172,318.50 × 172,318.50
4. Step 4: Simplify right side
   108,564x = 29,693,665,442.25
5. Step 5: Solve for x
   x = 29,693,665,442.25/108,564
6. Step 6: Final answer
   x = 273,513.00