Finding the Third Proportional to 72,600 and 108,898.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,600 : 108,898.50 = 108,898.50 : x
2. Step 2: Convert to fraction form
   72,600/108,898.50 = 108,898.50/x
3. Step 3: Cross multiply
   72,600x = 108,898.50 × 108,898.50
4. Step 4: Simplify right side
   72,600x = 11,858,883,302.25
5. Step 5: Solve for x
   x = 11,858,883,302.25/72,600
6. Step 6: Final answer
   x = 163,345.50