Finding the Third Proportional to 73,145 and 109,312

Step by Step Solution

1. Step 1: Write the proportion equation
   73,145 : 109,312 = 109,312 : x
2. Step 2: Convert to fraction form
   73,145/109,312 = 109,312/x
3. Step 3: Cross multiply
   73,145x = 109,312 × 109,312
4. Step 4: Simplify right side
   73,145x = 11,949,113,344
5. Step 5: Solve for x
   x = 11,949,113,344/73,145
6. Step 6: Final answer
   x = 163,362.00