Finding the Third Proportional to 72,318 and 111,297

Step by Step Solution

1. Step 1: Write the proportion equation
   72,318 : 111,297 = 111,297 : x
2. Step 2: Convert to fraction form
   72,318/111,297 = 111,297/x
3. Step 3: Cross multiply
   72,318x = 111,297 × 111,297
4. Step 4: Simplify right side
   72,318x = 12,387,022,209
5. Step 5: Solve for x
   x = 12,387,022,209/72,318
6. Step 6: Final answer
   x = 171,285.46