Finding the Third Proportional to 72,187 and 111,098.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,187 : 111,098.50 = 111,098.50 : x
2. Step 2: Convert to fraction form
   72,187/111,098.50 = 111,098.50/x
3. Step 3: Cross multiply
   72,187x = 111,098.50 × 111,098.50
4. Step 4: Simplify right side
   72,187x = 12,342,876,702.25
5. Step 5: Solve for x
   x = 12,342,876,702.25/72,187
6. Step 6: Final answer
   x = 170,984.76