Finding the Third Proportional to 72,603 and 108,900

Step by Step Solution

1. Step 1: Write the proportion equation
   72,603 : 108,900 = 108,900 : x
2. Step 2: Convert to fraction form
   72,603/108,900 = 108,900/x
3. Step 3: Cross multiply
   72,603x = 108,900 × 108,900
4. Step 4: Simplify right side
   72,603x = 11,859,210,000
5. Step 5: Solve for x
   x = 11,859,210,000/72,603
6. Step 6: Final answer
   x = 163,343.25