Finding the Third Proportional to 72,705 and 109,422

Step by Step Solution

1. Step 1: Write the proportion equation
   72,705 : 109,422 = 109,422 : x
2. Step 2: Convert to fraction form
   72,705/109,422 = 109,422/x
3. Step 3: Cross multiply
   72,705x = 109,422 × 109,422
4. Step 4: Simplify right side
   72,705x = 11,973,174,084
5. Step 5: Solve for x
   x = 11,973,174,084/72,705
6. Step 6: Final answer
   x = 164,681.58