Finding the Third Proportional to 73,172 and 109,445

Step by Step Solution

1. Step 1: Write the proportion equation
   73,172 : 109,445 = 109,445 : x
2. Step 2: Convert to fraction form
   73,172/109,445 = 109,445/x
3. Step 3: Cross multiply
   73,172x = 109,445 × 109,445
4. Step 4: Simplify right side
   73,172x = 11,978,208,025
5. Step 5: Solve for x
   x = 11,978,208,025/73,172
6. Step 6: Final answer
   x = 163,699.34