Finding the Third Proportional to 72,066 and 105,321

Step by Step Solution

1. Step 1: Write the proportion equation
   72,066 : 105,321 = 105,321 : x
2. Step 2: Convert to fraction form
   72,066/105,321 = 105,321/x
3. Step 3: Cross multiply
   72,066x = 105,321 × 105,321
4. Step 4: Simplify right side
   72,066x = 11,092,513,041
5. Step 5: Solve for x
   x = 11,092,513,041/72,066
6. Step 6: Final answer
   x = 153,921.59