Finding the Third Proportional to 109,428.19 and 164,142.56

Step by Step Solution

1. Step 1: Write the proportion equation
   109,428.19 : 164,142.56 = 164,142.56 : x
2. Step 2: Convert to fraction form
   109,428.19/164,142.56 = 164,142.56/x
3. Step 3: Cross multiply
   109,428.19x = 164,142.56 × 164,142.56
4. Step 4: Simplify right side
   109,428.19x = 26,942,780,824.07
5. Step 5: Solve for x
   x = 26,942,780,824.07/109,428.19
6. Step 6: Final answer
   x = 246,214.27